Is it possible to get a sound from external USB sound card ?
I have Xonar U7 and when i connect to TV i see:
usb 1-1.4: new high speed USB device number 6 using ehci-sdp
mmcblk0p22: Meta: 6156KB Data: 8700KB
input: ASUS Xonar U7 as /devices/platform/ehci-sdp.0/usb1/1-1/1-1.4/1-1.4:1.4/input/input2
generic-usb 0003:1043:857C.0003: input: USB HID v1.00 Device [ASUS Xonar U7] on usb-ehci-sdp.0-1.4/input4
cat /proc/asound/cards
0 [U7 ]: USB-Audio - Xonar U7
ASUS Xonar U7 at usb-ehci-sdp.0-1.4, high speed
1 [U0x4e80x205e ]: USB-Audio - USB Device 0x4e8:0x205e
USB Device 0x4e8:0x205e at usb-ehci-sdp.1-1.4, high speed
cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.24.