[newbie] tv card problems

[Paul]

I have a AverMedia TV-Studio TV card and the video worked fine under 8.1 and 8.2 Beta but the only problem is there is no sound!  I use the card in windows so I know that the cables are hooked up corectly and I can get sound when playing MP3's under Linux.  So I was wondering if there was something that I needed to do or if this card isn't compatible with the brooktree driver and if I would be better off with a card from Hauppage.  Thank you for your time.    -Paul