wintv pvr 250 with mplayer and no sound

I have a wintv pvr 250 and get at this forum a hint to use mplayer and ivtv-tune to adjust mplayer. I played around with this and find out how to set different channels, that is fine. Once I had sound as well, but that was more or less by incident. The actual status is, video from all the channels, but no sound and I don’t know hoow to continue.

I have installed openSUSE 11.0 with kde 4.1.2 32bit.

I try out the frontends kmplayer and smplayer but with no success.

Perhaps someone can give another hint to play sound on my system in combination with my tv-card. For other multimedia I have sound.

Thanks in advance.