Since they've corrupted WMP, uninstalling them won't even fix it.To fix this for Windows Vista: follow the steps in this article. Satellite TVfor PC 2007 does not do this anymore, but that doesn't really help you if you had installed Satellite TVfor PC 2006, sorry.To fix this issue, either switch to use Stereo instead of 5.1 or turn off the audio enhancements for the card.
* Vista-only: Some systems have "Disable Protected Audio DG" set to 0x1 under HKEY_LOCAL_MACHINE, Software\Microsoft\Windows\Current Version\Audio , which will break some audio playback.
If this does fix you up, check with your sound card vendor - they should not be having this problem.
I believe Dell/Sigmatel do have a driver update here that should fix you up.
Either go to the Regional and Language Options control panel, click Customize, click Date and use a MM/DD/YYYY form OR make your own "Recently Added" playlist.
* If you are using WMP11 on Media Center 2005, you should install the October Rollup (KB925766) here.