Solving sound driver conflicts

What was your previous video card?

If you haven't already, make sure you have the most recent driver.

I do have the latest drivers. tried older ones too, but the problem stays. When I use the drivers from win xp the problem does not occur, but then the quality of the sound is not as good as it should be and the effects can't be used.
any other ideas?

make sure you set your sound defaults in your audio control panel!

the sound defaults are set right. the problem does not appear when I play music (iTunes), only when I open a video file with media player classic (also windows media player). opening the video 5 or 6 times restores the sound eventually. I also have the problem with some games (e.g. Grid).
I think it has something to do with the older sound blaster live drivers,but I can't find newer versions of the driver.

any suggestions?

Use VLC media player instead of windows media player.
http://www.videolan.org/vlc/

I like media player classic, better than vlc. I think it's a driver problem because I get the same problem with some games (like when playing GRID, half life 2 ep.2). seems to me it's a conflict between sound and video driver.
still haven't found a solution for it though.....

You can try looking for an updated driver. But your audio hardware works with other applications, as you mentioned, so it's not likely a driver issue.