no sound, no video anymore pls help!!

Hi!
I don't know what i did. I can't play music or watch videos anymore. I've a problem with mcop (i got an error, saying something with arts and it can't use mcop)... and i changed the owners from root to a normal user and no error came later.
But i can play anythung with xmms or mplayer. I don't get an error, simply doesnt come any sound or the video files are like frozen.
So, i know its something with arts, so i run artsd status:
unix_connect: can't connect to server (unix:/tmp/mcop-oswaldo/zi011_glhnet_mhm_de-204b-419cc8b0)
ALSA lib pcm_hw.c:521:(snd_pcm_hw_prepare) SNDRV_PCM_IOCTL_PREPARE failed: Invalid argument
artsd: pcm.c:662: snd_pcm_close: Assertion `pcm' failed.
Aborted
Pls Help!

hi once again!
i forgot to post my .xsessions-errors:

Code:

xset: bad font path element (#88), possible causes are: Directory does not exist or has wrong permissions Directory missing fonts.dir Incorrect font server address or syntax xset: bad font path element (#88), possible causes are: Directory does not exist or has wrong permissions Directory missing fonts.dir Incorrect font server address or syntax xset: bad font path element (#88), possible causes are: Directory does not exist or has wrong permissions Directory missing fonts.dir Incorrect font server address or syntax startkde: Starting up... QPixmap: Cannot create a QPixmap when no GUI is being used QPixmap: Cannot create a QPixmap when no GUI is being used QPixmap: Cannot create a QPixmap when no GUI is being used QPixmap: Cannot create a QPixmap when no GUI is being used kbuildsycoca running... buffering: fragsize:4096 fragstotal:10 AudioIOOSSThreaded::startThread(): entering AudioIOOSSThreaded::writerThread() thread started AudioIOOSSThreaded::startThread(): leaving AudioIO::close(): entering unix_connect: can't connect to server (unix:/tmp/mcop-oswaldo/zi011_glhnet_mhm_de-1eea-4194ea25) Launched ok, pid = 7915 AudioIOOSSThreaded::stopThread() entering waiting for writerThread to finish AudioIOOSSThreaded::writerThread() thread stopped AudioIOOSSThreaded::stopThread(): leaving AudioIO::close(): leaving buffering: fragsize:4096 fragstotal:10 AudioIOOSSThreaded::startThread(): entering AudioIOOSSThreaded::writerThread() thread started AudioIOOSSThreaded::startThread(): leaving AudioIO::close(): entering AudioIOOSSThreaded::stopThread() entering waiting for writerThread to finish AudioIOOSSThreaded::writerThread() thread stopped AudioIOOSSThreaded::stopThread(): leaving AudioIO::close(): leaving buffering: fragsize:4096 fragstotal:10 AudioIOOSSThreaded::startThread(): entering AudioIOOSSThreaded::writerThread() thread started AudioIOOSSThreaded::startThread(): leaving There are already artsd objects registered, looking if they are active... ... cleaned 5 unused mcop global references. buffering: fragsize:4096 fragstotal:10 AudioIOOSSThreaded::startThread(): entering AudioIOOSSThreaded::writerThread() thread started AudioIOOSSThreaded::startThread(): leaving AudioIO::close(): entering AudioIOOSSThreaded::stopThread() entering waiting for writerThread to finish AudioIOOSSThreaded::writerThread() thread stopped AudioIOOSSThreaded::stopThread(): leaving AudioIO::close(): leaving buffering: fragsize:4096 fragstotal:10 AudioIOOSSThreaded::startThread(): entering AudioIOOSSThreaded::writerThread() thread started AudioIOOSSThreaded::startThread(): leaving AudioIO::close(): entering QFont::setPointSize: Point size <= 0 (-3) AudioIOOSSThreaded::stopThread() entering waiting for writerThread to finish AudioIOOSSThreaded::writerThread() thread stopped AudioIOOSSThreaded::stopThread(): leaving AudioIO::close(): leaving buffering: fragsize:4096 fragstotal:10 AudioIOOSSThreaded::startThread(): entering AudioIOOSSThreaded::writerThread() thread started AudioIOOSSThreaded::startThread(): leaving There are already artsd objects registered, looking if they are active... Error: Can't add object reference (probably artsd is already running). If you are sure it is not already running, remove the relevant files: /tmp/mcop-oswaldo/Arts_SoundServerV2 /tmp/mcop-oswaldo/Arts_SoundServer /tmp/mcop-oswaldo/Arts_SimpleSoundServer /tmp/mcop-oswaldo/Arts_PlayObjectFactory /tmp/mcop-oswaldo/Arts_AudioManager AudioIO::close(): entering AudioIOOSSThreaded::stopThread() entering waiting for writerThread to finish kdecore (KAction): WARNING: KAction::insertKAccel( kaccel = 0x81e3360 ): KAccel object already contains an action name "del" X Error: BadValue (integer parameter out of range for operation) 2 Major opcode: 102 Minor opcode: 0 Resource id: 0x0 QPixmap: Cannot create a QPixmap when no GUI is being used QPixmap: Cannot create a QPixmap when no GUI is being used kmix: ERROR: snd_ctl_open err=No such file or directory kmix: ERROR: snd_ctl_open err=No such file or directory QPixmap: Cannot create a QPixmap when no GUI is being used QPixmap: Cannot create a QPixmap when no GUI is being used kdecore (KAction): WARNING: KAction::insertKAccel( kaccel = 0x82f0a40 ): KAccel object already contains an action name "file_quit" kdecore (KAction): WARNING: KAction::insertKAccel( kaccel = 0x82f0a40 ): KAccel object already contains an action name "file_quit" AudioIOOSSThreaded::writerThread() thread stopped AudioIOOSSThreaded::stopThread(): leaving AudioIO::close(): leaving AudioIOOSSTHreaded::writerThread() fatal error writing to audio_fd AudioIOOSSThreaded::writerThread() thread stopped No running windows found No running windows found ** (xcdroast:8222): WARNING **: Invalid UTF8 string passed to pango_layout_set_text() ** (xcdroast:8222): WARNING **: Invalid UTF8 string passed to pango_layout_set_text() ** (xcdroast:8222): WARNING **: Invalid UTF8 string passed to pango_layout_set_text() kalarm: Fatal IO error: client killed knotify: Fatal IO error: client killed kded: Fatal IO error: client killed kwin: Fatal IO error: client killed khotkeys: Fatal IO error: client killed kicker: Fatal IO error: client killed KWrited - Listening on Device /dev/pts/0 kdeinit: Fatal IO error: client killed korgac: Fatal IO error: client killed kdeinit: Exit. klauncher: Fatal IO error: client killed kicker: sighandler called kicker: sighandler called ICE default IO error handler doing an exit(), pid = 7932, errno = 104 kdesktop: Fatal IO error: client killed ICE default IO error handler doing an exit(), pid = 7930, errno = 32

pls help me! I don't know what to do

file specified are not yet benn suported by linux...other mp3 format,mpg(windows format).,wma,and other.
all you have to do is to download kernel patch for your sound card.. thats it
i also have same problem... but now i can play allmy mp3 collection...
this is the step:
1.download new xmms player , newer the better.but dont juust download read the supports infomation
2. install it and reboot .
3. try playing your musics
'' if this dont work continue with the following but i recommend to continue with the following procedure
4.download sound kernel patch
5.install and reboot
6.check your sound configuration
''ok that all help i can give ..answered using experience... to i dont really know if this work with your system... but yet you can try... nothing to loose

thx!
Problem solved! What you said really pointed me in direction. I upgraded my kernel to 2.6.9 and added few sound modules and voila!

In order for you to truly be able to completely migrate to Linux, you must stop thinking the way M$ has conditioned you to. The *only* time you need to reboot your computer is when you change the kernel itself. Other than that, all you generally have to do is restart the application that you've modified. Sometimes you don't even have to do that, as Linux programmers have figured out...are you ready? you're gonna like this... DYNAMIC CONFIG RELOADING. Yes. Quite a few programs can now re-read their config files and know when they've been modified while running and will accept the new settings.

Anyways, the point of this: You don't have to reboot when you modify settings or libraries on your computer.

Also, sound file formats are not handled by the kernel, but rather by codecs installed via plugins for XMMS and various other multimedia programs. If you are going to answer a question, at least know wtf you're talking about.