No sound with WinTV Go-Plus TV tuner card

[eighthcircuit]

I got a new WinTV Go-Plus cable TV tuner for my PC. The problem is that there is no sound if I use my external soundcard (M-Audio Audiophile USB). If I use my stock internal soundcard (Sound Blaster Live) then the sound works. I don't understand, cause my external card works with everything else played from my computer. Any ideas?

Also, another problem with the WinTV TV tuner is that even when the sound does work (through my internal sound card), it is only in mono and pretty bad quality (lots of background hiss). Whats going on?

 

[Hylian]

Well looking at the pictures here: http://www.hauppauge.com/Pages/press/press_pictures_pci.html , I see no option to connect your TV tuner to your external soundcard (usually through a cd-in cable). I assume that large silver thing splits the signals (audio/video) and it can only send the audio to your motherboard, which is why it only works that way.

However, if it works, why try to fix it?