All posts by cdstealer

Headphones Sennheiser vs Sennheiser

 

When it comes to headphones, I'm afraid I'm firmly in the Sennheiser camp.  They seem to have the right feel, comfort and sound for me :)
The CX300s were perfect to ipods and various other smaller mp3 players.  They gave a good sound and coped with all that they could throw at them.  Not much volume was needed with them going into the ear canal.
Then came the HD212pros, they were no good for ipod and the like as they required too much power to drive them, but, hooked up to the Cowon X7, they were amazing!  Loud, clear and earth shattering bass.  Many people complained that the bass was too much on these, but I found them perfect!
Now comes the MM550 Travel.  Not as heavy on the bass, but still very present.  The clarity is much more than the HD212 and sound more defined.  They are slightly quieter than the HD212, but with a little tweaking of the EQ, this was compensated :)

I decided to invest in the MM550 for several reasons:

  1. I wanted to free myself of the cables on my daily commute to the office.
  2. I wanted to be able to use them with other devices like a mobile phone and PS3.

They certainly tick both of those boxes.  These are my pros and cons:

Pros:

Wireless.
Can pair with several devices at once.
Have noise cancelling.
Able to control connected devices.
Comfortable.
Build quality.
Sound quality.

Cons:

Slightly quieter.
Signal will break up if separated by walls.
If phone connects first, other devices cannot connect.

Also to note that headphones in bluetooth mode tend to have a gap, so there is a slight interruption in between tracks.  This is not a fault of the head set, but rather the player.  Eg. The gap is present on the X7 but non existent on Audacious on the laptop.

I'm using these with a Cowon X7 so these are my unbias findings:

With all EQ/SRS/Noiseguard disabled, the MM550 provided a very clear, well balanced sound.
The Earcups are a good size and encapsulate the ear and provide very good isolation.  There is very little sound leakage in both directions.  They grip the head very well without crushing your ears and feel very secure, even in gale force winds (50mph+).

With only SRS enabled, the bass and highs are pronounced and some mid range freqs are lowered.  The sound produced has more clarity and very very comfortable to listen to.

With only Noiseguard enabled, the bass is very reduced and mid/high freqs are pronounced.  This I find is uncomfortable to listen to.
The noiseguard along with the natural isolation is very good and blocks out sounds like the natural hum of an office or the buzzing of a fridge.  If you are expecting sounds like a very loud train or a building site to be filtered, then you will be disappointed.

With both SRS & Noiseguard enabled, you get a mix of the above sound.  Very clear and crisp, but for me, nothing to write home about.

Enabling the X7's EQ Jeteffect with BBE provides a great improvement on the sound and allows you to tune the sound to your liking.  With my custom setup and SRS enabled, this give my music so much depth and clarity and makes listening and absolute pleasure.

Enabling any of the JetEffects, BBE or increasing any EQ settings results in a severe drop in volume when in bluetooth mode.  However, using a wired connection, these handle everything very very well with good volume and no gaps.

RAID1 setup

I decided it was about time I actually setup some redundancy for my data.  Having never done a full backup and only storing the odd chunk of data somewhere on a dvd.  Losing the HDD would be a severe PITA!  I purchased a Startech PEXSAT32 and popped it in.  As my current HDD is SATA and is running under AHCI, the card was picked up out of the box.

Before connecting any drives I ran a quick speed check (3 times) with the onboard SATA controller and got the following results.

# hdparm -tT /dev/sda
/dev/sda:
 Timing cached reads:   10954 MB in  2.00 seconds = 5479.70 MB/sec
 Timing buffered disk reads: 264 MB in  3.01 seconds =  87.64 MB/sec

# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 11060 MB in 2.00 seconds = 5533.11 MB/sec
Timing buffered disk reads: 264 MB in 3.01 seconds = 87.71 MB/sec

# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 10698 MB in 2.00 seconds = 5351.98 MB/sec
Timing buffered disk reads: 262 MB in 3.02 seconds = 86.71 MB/sec

Fairly poor for a SATAII controller and a SATAII drive!!!

Time to connect the drives...

At the risk of not losing any data and the fact that I just didn't have anything big enough to backup to, I just bought 2 x WD 1TB Eco.  The current drive is SATAII one of these :)

Due to the way the RAID is setup, both drives will be erased upon setup.  This rules out cloning the original drive and building the array. The way I had to do this was to setup the RAID1 and then clone the original drive...FAIL!  The original drive was a few blocks larger than the RAID drives :(
The work around was to mirror the partitions of the original.  This doesn't have to be an exact science, but does have to accommodate the data to be copied.  Once the partitions have been setup (done via a Gentoo minimal CD and fdisk) it was time to start migrating data.

I created 2 directories:
/mnt/master
/mnt/raid

/boot /dev/sda1    100M
swap /dev/sda2    2Gb
/ /dev/sda3    5Gb
/dev/sda4    Extended partition
/var /dev/sda5    10Gb
/usr /dev/sda6    20Gb
/tmp /dev/sda7    10Gb
/root /dev/sda8    1Gb
/home /dev/sda9    870Gb

/dev/sda being the original drive, I mounted the in the following order.

mount /dev/sda3 /mnt/master
mount /dev/sda1 /mnt/master/boot
mount /dev/sda5 /mnt/master/var
mount /dev/sda6 /mnt/master/usr
mount /dev/sda7 /mnt/master/tmp
mount /dev/sda8 /mnt/master/root
mount /dev/sda9 /mnt/master/home

I did the same with the raid drive (/dev/sdb) as above but mounted to /mnt/raid.

I then executed the following to copy the data:

cd /mnt/master
tar cf - . | (cd /mnt/raid; tar xfp -)

This took quite a few hours due to the sheer amount of data.  Although the tar command would be a little slower than say dd.  It does allow me to copy *ALL* files from each partition, including hidden files/folders.

Once that completed, I powered off the machine and removed the original drive.  Powered back up and booted into the Gentoo CD again.  I repeated the procedure and mounted the partitions (except sda1 or /boot).
Next we need to chroot into the drive's installed OS.  cd into /mnt/(where you mounted the / partition).
chroot /mnt/(where you mounted the / partition) /bin/bash
env-update
source /etc/profile

This has now put us into the OS installed on the drive.  As we have only copied the OS files, we need to install grub onto the MBR.  If you ignored me and mounted /dev/sda1 then you will fail and grub will complain!!
type "grub" to enter the grub command line interface.
type "root (hd0,0)"  This will return the format of the file system ie 0x83
type "setup (hd0)"  This will return several lines of "stage" files if successful.

That's it.. job done.  Exit the chroot by typing "exit" and "reboot".

Now... the pros and cons for me for this setup is although I now have the redundancy should a drive die, there is *NO* performance boost at all.  Infact, upgrading to SATAIII only gained me approx 10Mb/s increase.

# hdparm -tT /dev/sda

/dev/sda:
Timing cached reads:   11322 MB in  2.00 seconds = 5664.09 MB/sec
Timing buffered disk reads: 286 MB in  3.00 seconds =  95.26 MB/sec

# hdparm -tT /dev/sda

/dev/sda:
Timing cached reads:   10200 MB in  2.00 seconds = 5102.15 MB/sec
Timing buffered disk reads: 272 MB in  3.00 seconds =  90.56 MB/sec

# hdparm -tT /dev/sda

/dev/sda:
Timing cached reads:   10500 MB in  2.00 seconds = 5252.27 MB/sec
Timing buffered disk reads: 276 MB in  3.02 seconds =  91.33 MB/sec

I found the below info on a forum regarding slow performance, but I also read elsewhere that SATAIII is a complete waste of time with mechanical drives.

fdisk -H 224 -S 56 /dev/sdb

running fdisk with these parameters ensures that every partition you create is aligned to 4KiB boundaries.  I have not run the above command, this is something for me to test when I have time.

Audio CD Ripper

A customisable cdripper script.

cdripper

It took me a while to get this functioning how I wanted it.. but it seems to do the job.  The script can be run as any user from any location.  It will create a config file in ~/.cdripper and work in ~/tmp.  I bunged it in /usr/local/bin ($PATH) and made it executable.  The config file will be used  for defaults, but any arguments passed on the command line will over rule it.

There are a couple of functions that require an internet connection ie: cddbdb and sample offset values.  If no net connection is available, then cdtext will be used for id3tag and no sample offset will be used.

Features:
Can use CDTEXT or FreeDB for id3tag info.

Dependencies: (Versions at time of creation.)

cdparanoia III release 10.2
cdda2wav 3.00
LAME version 3.98.4
id3tool version 1.2a
id3v2 0.1.11
Uses id3lib-3.8.3
flac 1.2.1
cd-discid 0.9
cddb-tool version 0.4.7
traceroute (used instead of ping due to some networks blocking ICMP traffic)
libwww-perl (used for the GET binary to grep web pages)
vorbis-tools 1.4.0

TO DO:
Add other formats to encode to ie shn, wv, ogg
Add more arguments or config file.
Do an ebuild :)
Convert from bash to perl (add freedb submission)

Tweaks and Fixes:
13th Nov 2011: Added WAV support
19th Nov 2011: Added OGG support
21st Jan 2012: Added ripping to wav image with cue file
11th Feb 2012: Added rip speed, tidy log file, corrected removal of temp files.

How to use:
Several arguments can be passed at runtime.  Any arguments not used, the defaults will be used.

The current defaults are:
Device: /dev/sr0 (auto detected)
Sample Offset: (grepped from accurip)
Encoder: LAME
Bitrate: 320kbps CBR
Mode: Stereo
Quality: 0
CDDB: FREEDB

OPTIONS:

-d<devicenode>      usually /dev/sr0 
-b<bitrate>         lame bitrate 
-o<quality>         ogg quality 
-t<track #>         all|single|range|image
-e<encoder>         lame|flac|wav|ogg 
-c<cddb>            local|net
-s<rip speed>       cdparanoia rip speed

Simple File System Encryption

It's soooo easy to "misplace" your removable drive, so encrypting it is a good way to help protect your data should it be lost :)

In this example, I will be using a USB2 2Gb flash drive.

The first port of call is to ensure you have the DEVICE_MAPPER driver compiled into the kernel.  If you're using a binary distro, this almost certainly is already present.

Device Drivers ->
Multiple devices driver support (RAID and LVM) ->
Device mapper support
Crypt target support

Also ensure you have compiled the required encryption...

Cryptographic API -> (both options below are the default encryption used)
AES cipher algorithms (x86_64)  <---- only available on 64bit OS
AES cipher algorithms (AES-NI)

Now insert your drive then run the following commands:

cryptsetup -y luksFormat /dev/sdX# (whatever your node is)
cryptsetup luksOpen /dev/sdX# <name>  <-- this opens the encrypted device ready for mounting.  The new device will now exist under /dev/mapper/<name>
mke2fs -j -L <name> /dev/mapper/<name>  <-- formats the partition
cryptsetup luksClose /dev/mapper/<name>  <-- unmounts the encryption

You can now unmount the drive and test it by re-inserting it.  Your GUI should prompt you for the passphrase if all has worked ok.

If you need to mount from the cli do the following:

cryptsetup luksOpen /dev/sdX# <name>
mount /dev/mapper/<name> /mnt/usb/

To unmount from the cli do the following:

cryptsetup luksClose /dev/mapper/<name>
umount /dev/mapper/<name>

That's it... simple :)

Gnome3 Tweaks

1) Removing icons from the System status area

Gnome 3 has a fixed number (well, kinda fixed, because Shell Extensions can be used to create more) of icons in the System Status Area. Some of these icons, like accessibility, may not be useful to you and just taking up space.

You can remove the icons that appear in the System Status Area by editing the file /usr/share/gnome-shell/js/ui/panel.js, and commenting out some of the items that are assigned to the STANDARD_TRAY_ICON_ORDER array.

const STANDARD_TRAY_ICON_ORDER = [/*'a11y',*/ 'display', 'keyboard', 'volume', 'bluetooth', 'network', 'battery'];
const STANDARD_TRAY_ICON_SHELL_IMPLEMENTATION = {
//    'a11y': imports.ui.status.accessibility.ATIndicator,

This is at circa line 36

Be aware that updates to this file will most likely undo any changes you make, so if the icon pops back, just edit the file again.

To make your change "live", press ATL-F2 and type r then press enter.  This will cause the GnomeShell to restart.  This usually doesn't close any running apps, but save any work you have just to be safe.

2) Installing Gnome Shell Extensions

Gnome Shell Extensions provide a number of official enhancements to the Gnome 3 desktop.  You can download and make the extensions for yourself using the following commands.
  1. mkdir ~/temp
  2. cd ~/temp
  3. git clone http://git.gnome.org/browse/gnome-shell-extensions
  4. cd gnome-shell-extensions
  5. git checkout 3.0.0
  6. ./autogen.sh
  7. make && make install
  8. press ALT-F2 and run the command "r" (without the quotes) to restart the Gnome Shell

Step 5 checks out the version of the extensions that works with the current version of the Gnome Shell. You can omit this command to get the latest version of the extensions, but their manifest.json files do mandate a more recent version of the Gnome Shell (like 3.0.1 or 3.0.2).

You can add the --enable-extensions="alternate-tab windowsNavigator auto-move-windows dock user-theme alternative-status-menu gajim" option to step 6 to install the additional extenions. Your luck may vary - my version of Gnome 3 would not load with all the extenions.

For a complete list of the extenions that can be supplied to the --enable-extensions option, see the configure.ac file under the ALL_EXTENSIONS= section.

To check for any errors that may have occured while loading the extenions, press ALT-F2 and run "lg" (without the quotes). This will open a JavaScript console, which has an Errors tab.

3) Manually Tweaking

A powerful gconf style editor is available called dconf-editor.  To access this, press ALT-F2 and type dconf-editor.  Be careful what you tweak, you could prevent the gnome-shell from starting.

Gnome Terminal

Gnome terminal doesn't like to obey the "normal" locale file.  It uses "/etc/X11/gdm/locale.alias", and therefore usually has the incorrect character encoding.  eg.

instead of:

The way to solve this is to create a symlink to the correct locale.

1) Backup the original file:

mv /etc/X11/gdm/locale.alias /etc/X11/gdm/locale.alias.bak

2) Create the symlink:

ln -s /etc/locale.gen /etc/X11/gdm/locale.alias

It's also worth noting that I only have the following in my file:

en_GB ISO-8859-1
en_GB.UTF-8 UTF-8

 

 

Swap space.

To quickly add some extra swap do the following (as root):

dd if=/dev/zero of=/extraswap bs=1M count=12288

This will create a 12Gb swapfile in /

chmod 600 /extraswap

This will set the correct permissions on the file.

mkswap /extraswap

This will format the space for use as swap.

swapon -s

This will show what is currently mounted as swap.

If you want this to be a temporary setting just run:

swapon /extraswap

If you want this to be persistent, add this to your /etc/fstab:

/extraswap        none        swap        sw        0 0

Gnome3 overlay install

Can't wait for Gnome3 to the portage? The below steps a basically what I completed to upgrade gnome-light.

Follow these "simple" steps:

edit $HOME/.config/autostart/compiz.desktop and change "X-GNOME-Autostart-enabled=false" to "X-GNOME-Autostart-enabled=false".  Compiz is NOT compatible with Gnome3 and will just prevent you from logining in.

edit /usr/portage/profiles/package.mask and comment out the following.  (This will need to be done every time you sync.)

>=gnome-base/gdm-2.26
>=x11-wm/metacity-2.34
>=media-gfx/gthumb-2.13
>=gnome-extra/nautilus-open-terminal-0.19
>=x11-misc/notification-daemon-0.7

Add the following to /etc/portage/package.keywords

# Gnome3-light
app-arch/file-roller
app-editors/gedit
app-text/gnome-doc-utils
app-text/poppler
dev-lang/vala
dev-libs/atk
dev-libs/gjs
dev-libs/glib
dev-libs/gobject-introspection
dev-libs/json-glib
dev-libs/libgweather
dev-libs/libunique
dev-libs/nss
dev-python/pygobject
dev-util/gtk-doc-am
gnome-base/dconf
gnome-base/gdm
gnome-base/gnome-applets
gnome-base/gnome-control-center
gnome-base/gnome-core-libs
gnome-base/gnome-desktop
gnome-base/gnome-fallback
gnome-base/gnome-keyring
gnome-base/gnome-light
gnome-base/gnome-menus
gnome-base/gnome-panel
gnome-base/gnome-session
gnome-base/gnome-settings-daemon
gnome-base/gnome-shell
gnome-base/gsettings-desktop-schem
gnome-base/gvfs
gnome-base/libgnome-keyring
gnome-base/libgnomekbd
gnome-base/nautilus
gnome-extra/evolution-data-server
gnome-extra/gconf-editor
gnome-extra/gnome-media
gnome-extra/gnome-power-manager
gnome-extra/gnome-screensaver
gnome-extra/gnome-shell-extensions
gnome-extra/gnome-tweak-tool
gnome-extra/gnome-user-share
gnome-extra/gnome-utils
gnome-extra/nm-applet
gnome-extra/polkit-gnome
gnome-extra/zenity
media-fonts/cantarell
media-gfx/eog
media-libs/clutter
media-libs/clutter-gst
media-libs/clutter-gtk
media-libs/gst-plugins-base
media-libs/gstreamer
media-libs/libcanberra
media-libs/libexif
media-plugins/gst-plugins-*
media-plugins/gst-plugins-ogg
media-plugins/gst-plugins-pango
media-plugins/gst-plugins-theora
media-video/cheese
media-video/gnome-video-effects
net-dialup/ppp
net-im/pidgin
net-im/telepathy-logger
net-libs/libnice
net-libs/libsocialweb
net-libs/libsoup
net-libs/rest
net-libs/telepathy-glib **
net-libs/xulrunner
net-misc/networkmanager
net-print/cups
net-print/cups-pk-helper
net-voip/telepathy-haze
net-wireless/gnome-bluetooth
sys-apps/accountsservice
sys-apps/gnome-disk-utility
sys-auth/polkit
sys-fs/udev
www-client/epiphany
www-client/firefox
x11-libs/gdk-pixbuf
x11-libs/gnome-pty-helper
x11-libs/gtk+
x11-libs/libwnck
x11-libs/libxklavier
x11-libs/mx
x11-libs/pango
x11-libs/vte
x11-terms/gnome-terminal
x11-themes/gnome-icon-theme
x11-themes/gnome-icon-theme-extras
x11-themes/gnome-icon-theme-symbol
x11-themes/gnome-themes-standard
x11-wm/metacity
x11-wm/mutter

# Gnome3 Empathy
net-im/empathy
app-misc/geoclue
dev-libs/folks
media-libs/libchamplain
net-libs/telepathy-farsight

# Gnome Fallback
dev-lang/lua
app-cdr/brasero
app-crypt/seahorse
app-text/evince
dev-libs/gmime
dev-libs/libburn
dev-libs/libisofs
dev-libs/totem-pl-parser
gnome-base/gnome-core-apps
gnome-extra/gnome-user-docs
gnome-extra/yelp
gnome-extra/yelp-xsl
media-libs/quvi
media-libs/taglib
media-video/totem
net-libs/farsight2
net-libs/libsoup-gnome

execute 'echo "-introspection" >> /etc/portage/profile/use.mask

OK, now 'emerge layman'.  Once complete, execute 'echo "source /var/lib/layman/make.conf" >> /etc/make.conf'.  Now execute 'layman -a gnome'

This is where the fun begins.. this is NOT flawless, but hopefully the errors will be easy enough to remedy.

eg.  You may need to unmerge gnome-themes-extras gnome-themes gdm gnome-panel gnome-netstatus to prevent blocked packages.

Now just run 'emerge -puvND world'  if you are happy with the result, remove the 'p' switch.

To checkout the newest upstream, run layman -S.

You can always check what has been updated and when by going here

If you want to have legacy menu's then emerge gnome-fallback.  This will install more apps that you probably don't use that are "standard" in gnome.

Remotely repartition the HDD.

Have you or do you know someone that has performed a reinstall of an OS and left the partition options at the default ie everything under / and omitted setting up the partitions?
All is not lost.. this guide was performed on a RHEL 5.5 install and worked flawlessly. :)

In a nutshell, we're dumping the filesystem on to the swap partition, repartitioning the drive and then dumping the data back into the respective partitions.  The pitfall in this is your swap partition HAS to be large enough to store your data.  Are we sitting comfortably?... then I'll begin.

execute lvdisplay to get LogVol01 size, then do a df -h and see if / will fit on swap.

Copy the FS to SWAP.
1) Edit /boot/grub/grub.conf
change root=/dev/VolGroup00/LogVol00 to root=/dev/VolGroup00/LogVol01 (the default swap partition)
2) Edit /etc/fstab
comment /dev/VolGroup00/LogVol00 and change LogVol01 to / ext3 (swap becomes the new root)
3) run swapoff -a
4) mkfs -t ext3 -m 1 -v /dev/VolGroup00/LogVol01 (format the swap partition)
5) mount /dev/VolGroup00/LogVol01 /mnt
6) tar clf - -C / .| tar xf - -C /mnt (this is better than cp as it keeps the file attributes)

clf -     create, sym links, file 
-C /      Change directory to / <source>
.|        pass everything to 
xf -      extract, file
-C /mnt   Change directory to /mnt <destination>

REBOOT
(execute a df -h and check the size of /, it should be the size of swap previous)

Create the new partitions.
7) lvremove /dev/VolGroup00/LogVol00 (this completely deletes the / partition)
8) lvcreate -L30G -n rootvol VolGroup00 (this creates a 30G partition named rootvol)
9) lvcreate -L30G -n usrlocalvol VolGroup00
10) lvcreate -L4G -n varvol VolGroup00
11) lvcreate -L4G -n optvol VolGroup00
12) mkfs -t ext3 -m 1 -v /dev/VolGroup00/rootvol (format the new partitions)
13) mkfs -t ext3 -m 1 -v /dev/VolGroup00/usrlocalvol
14) mkfs -t ext3 -m 1 -v /dev/VolGroup00/varvol
15) mkfs -t ext3 -m 1 -v /dev/VolGroup00/optvol
16) vi /etc/fstab and add the new partitions: (make the partitions available)

/dev/VolGroup00/rootvol        /               ext3    defaults   1 1
/dev/VolGroup00/usrlocalvol    /usr/local      ext3    defaults   1 1
/dev/VolGroup00/varvol         /var            ext3    defaults   1 1
/dev/VolGroup00/optvol         /opt            ext3    defaults   1 1

Now to restore the data:
17) mkdir /media/root /media/var /media/opt /media/usr
18) mount /dev/VolGroup00/rootvol /media/root
19) mount /dev/VolGroup00/usrlocalvol /media/usr
20) mount /dev/VolGroup00/varvol /media/var
21) mount /dev/VolGroup00/optvol /media/opt
22) tar clf - -C / .| tar xf - -C /media/root
23) tar clf - -C /var/ .| tar xf - -C /media/var
24) tar clf - -C /opt/ .| tar xf - -C /media/opt
25) tar clf - -C /usr/local/ .| tar xf - -C /media/usr
26) edit /media/root/etc/fstab (ensure new mounts are present & comment
LogVol01)
27) edit /boot/grub/grub.conf
change root=/dev/VolGroup00/LogVol01 to root=/dev/VolGroup00/rootvol
28) rm -rf /media/root/usr/local/* /media/root/var/* /media/root/opt/*

REBOOT

Reactivate the swap partition
29) lvremove /dev/VolGroup00/LogVol01
30) lvcreate -L16G -n swapvol VolGroup00
31) mkswap /dev/VolGroup00/swapvol
32) Edit /etc/fstab
change LogVol01 / ext3 to swapvol swap swap
33) swapon /dev/VolGroup00/swapvol

REBOOT

Congratulations.. your server is now in a sensible condition.  Sit back, relax and give yourself a pat on the back for not looking like a complete n00b!

Cowon X7 on Linux

I needed an MP3 player with plenty on space, and none of the flash memory devices could accommodate.  Enter the Ipod Classic.  Bought the 160Gb Black knowing that there was Linux support.. How naive of me to think that it would just work...!  I settled on Banshee as this suited my needs.. but alas, it was shorted lived.. playlists became a big no-no.  I tried other applications, all with the same results.  Nothing would either read or write the list to the ipod.  GTKPod however, did manage the playlists, but that had it's own issues with track order being impossible.

Being completely sick to the back teeth with constantly battling with Apple's pretty yet crippled player, I bought the Cowon X7 after reading plenty of reviews on it's quality of sound etc.  Yep.. frustration endless frustration..

1) Player not detected by any media managers.
(even after quite awhile hacking libmtp-1.0.6 to see the X7)
2) Completely unable to create playlists.
3) Several UI annoyances :(
4) Device become read only if invalid characters are present (corrupted) in the file/folder names.  The only way I could fix this was rename my source files, format the device and start again.

Changing the USB to MSC on the device and just rsyncing my music did the trick, but that still didn't fix the playlist issue.  Manually knocked up a playlist, which obviously didn't work.  After a few hours of scratching my head I managed to fix it.. In short it was the the format of the file.  I use VI and stupidly overlooked that it prefers unix not dos format file output.  Any playlist created under Linux will need to be converted, this can be done in a couple of steps.

1) Convert the file to dos.  I used the command ":e ++ff=dos" from within VI and then saved the file.  This works if you manually create the file, if you saved the playlist from say Audacious then you'll need to use unix2dos as there will be no carriage returns (CR) for VI to process.
2) Change the path to the music files to the absolute path to the player ie what it sees not the absolute path including the mount point ie /media/******.
3) Change the directory dividers to Windows format.
4) Use SED to append a '\r' to the end of each line.

sed 's/$'"/`echo \\\r`/"

My local library is /home/cdstealer/Music and the X7 library is /Music, so my playlist was just copied into the root of the players HDD as the paths in the m3u file were relative.  If you store your playlists anywhere else ie /Playlists, then the paths in the m3u file need to be absolute.

If using mtp to transfer your playlist, it will be copied into the root of the 2Gb Flash memory and not the HDD.  I found this does not work :(

eg to change the directory slashes:

sed -i 's/\//\\/g' cdstealer.m3u

So now I can create playlists with banshee, audacious etc etc and just run the above commands to make them compatible.

I small bash script that could help:

#!/bin/bash
# make an extended playlist from an mp3 directory

echo "#EXTM3U"
for i in *.mp3; do
   if [ -e "$i" ]; then
      title=`id3v2 -l $i | grep TIT2 | awk -F": " '{print $2}'`
      seconds=`mp3info -p "%S" "$i"`
      echo "#EXTINF:$seconds,$title"
      echo $(pwd | sed 's/home\/cdstealer\///'|sed 's/\//\\/g')\\$i
   fi
done

Playlist sorted :)

Also, when adding new music, although there is a menu for listing tracks transferred in the last day/week/month etc, it does not organise then in a useful fashion.  You get a list of all the tracks list in alphabetical order (which is pointless IMHO).  So the script below that I use for syncing my music will also create a separate playlist for every album.
The downfall to this is, if you a lot of music at once or wipe the device a transfer your entire collection, you WILL have a large amount of playlists!

Transfer/playlist script

Now for the filenames.  Both the ipod and X7 use the fat32 file system and as such, they don't handle UTF-8 characters in file/directory names.  Because the ipod stores everything in a database, all transferred files/directories are renamed to some string of numbers, so this isn't and issue.  But, for the X7,  it is drag n' drop and doesn't rely on a database in the same way as Ipod, filenames are vital as they are untouched.  I found an easy gui app to do this called "Easytag".  A very good all-in-one app that renames the files in dos format, writes the id3tag and embeds artwork into the files.
What I ended up doing is renaming all my MP3 to "TrackXX.mp3".  This isn't an issue for me as the X7 and MythTV list everything from tags.
What I have found is EasyTag writes id3 information to the end of the mp3 file, where as id3v2 read/writes from/to the header at the beginning.  So this means any files tagged with EasyTag will not be compatible with the id3v2 command.

You could also rename files using the script I found below that will rename anything passed to it to remove any illegal characters.  To invoke it (before you transfer to the X7), for example:

To rename your file:
find ~/Music -type f -name "*" | perl fat_rename.pl

To rename your directories:
find ~/Music -type d -name "*" | perl fat_rename.pl

This is the magic:

#!/usr/bin/perl -w

# This script renames all the files supplied as command-line args
# where necessary so that the filename is acceptable to MS Windows
# Cameron Hayne (macdev@hayne.net), June 2004

use strict;

chomp(@ARGV = <STDIN>) unless @ARGV;

# The Microsoft document at
# http://support.microsoft.com/default.aspx?scid=kb;EN-US;100108
# says that the following characters are not allowed in filenames
# in each of the specified filesystems:
# FAT: . " / \ [ ] | : ; , =
# NTFS: ? " / \ < > | : *

# We don't do anything with the dot (.) since it clearly is allowable
# in spite of what that document says.
# And we don't do anything with the slash (/) since that character
# will not occur in OS X filenames and modifying it would cause
# troubles when a file path (with directories) is specified.
# The changing of the filenames is done via the 'tr' statements below.
# Each occurence of a character in the first curly brackets
# is replaced by the character in the second curly brackets.

foreach my $filename (@ARGV)
{
my $orig_filename = $filename;

$filename =~ tr{\\}{-};
$filename =~ tr{*?}{-};
$filename =~ tr{"><[]|:;,=}{-};

unless ($filename eq $orig_filename)
{
print "About to rename $orig_filename to $filename\n";
if (-e $filename)
{
print "Oops, there already exists a file named $filename\n";
print "Skipping the rename - you will have to do it manually\n";
}
else
{
rename($orig_filename, $filename);
}
}
}

But I must admit, after getting used to the UI, the BBE3 sound processor is amazing.  And after all, I did purchase this to listen to music.  I set my BBE to "user1" and spent quite a while tweaking the sound for my headset and ears.. it does exactly what it says.. very very pleased.