Dear, Now I found that my tv card have a usb audio class compliant audio stream interface. Linux's audio class driver snd-usb-driver finds my audio device, and the relative device nodes under /dev have been created successfully. And I am also using adevice option to give mplayer correct alsa device, when I play tv program, I cat /proc/asound/card1/stream0, streaming status is running, but I still can not get any sound. I have no experience to config snd-usb-audio, if you have it, would you like to give me some clues. Thanks. With all best wishes. _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb