Internet TV: no sound
 

I have a problem with Winamp 2.91
When I try to play internet TV (from the media library, didn't try other ways yet) I only get the picture, but no sound.
With everything else, sound is working fine.

when searching for this problem I found 4 people reorting it already, but no answers :(
I hope somebody could help me now.

I just tried again and it works for some stations like the Bjork Promo channel and the NTV channels. On the other channels theres no sound, the vis doesn't show anything.

My configuration:
Winamp2.91 full
DS output plugin
Windows 2000 SP4
Directx 9
SB Audigy Player
Athlon 1.4 TB
512MB DDR RAM
Lifetec TV-Card
Vodoo 4 4500 (3Dfx rulez!)