Thomas,
Thanks for your reply.
I have downloaded the latest version of Windows Mediaplayer (version 9 bèta release). This version has the option to select a different soundcard. Much better. Can you imagine that you are in the middle of a movie and suddenly there is an incoming message from ICQ screaming "oh oh".
Other players don't give this option yet. Also it is not possible to directly enter the volume controls through your taskbar or from the buttons on your keyboard. There is much to improve for Microsoft and other softwarebuilders.
Thanks anyway
Gaston