i use 6.6 snapshots and USB sound card . the card play youtube well including sound .
------------------------------ $ dmesg | grep audio uaudio0 at uhub2 port 4 configuration 1 interface 1 "C-Media Electronics Inc. USB Audio Device" rev 1.10/1.00 addr 5 uaudio0: class v1, full-speed, sync, channels: 2 play, 1 rec, 8 ctls audio0 at uaudio0 uaudio0: can't reset interface uaudio0: can't reset interface audio0 detached uaudio0 detached uaudio0 at uhub3 port 6 configuration 1 interface 1 "C-Media Electronics Inc. USB Audio Device" rev 1.10/1.00 addr 4 uaudio0: class v1, full-speed, sync, channels: 2 play, 1 rec, 8 ctls audio0 at uaudio0 -- from 竹島強
