звук через M-Track в archlinux

погугли.

для начала давай вывод lsusb

http://pastebin.com/SRvQwzXN lsusb Bus 002 Device 003: ID 0781:5580 SanDisk Corp. SDCZ80 Flash Drive Bus 002 Device 002: ID 174c:55aa ASMedia Technology Inc. ASM1051 SATA 3Gb/s bridge Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 006: ID 046d:0829 Logitech, Inc. Bus 001 Device 005: ID 09da:c10a A4Tech Co., Ltd. Bus 001 Device 004: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 001 Device 003: ID 0763:4000 Midiman Bus 001 Device 002: ID 04f9:003f Brother Industries, Ltd Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

ну и где здесь ты увидел свою аудиокарту M-Track???

на всякий случай в ауре есть дрова

Repository     : aur
Name           : xf86-input-mtrack-git
Version        : 0.2.0.49.g7977197-1
URL            : http://github.com/BlueDragonX/xf86-input-mtrack
AUR URL        : https://aur.archlinux.org/packages/xf86-input-mtrack-git 
Licenses       : GPL
Votes          : 20
Out Of Date    : No
Groups         : None
Provides       : xf86-input-mtrack
Depends On     : mtdev libxss
Optional Deps  : None
Conflicts With : xf86-input-mtrack
Replaces       : None
Maintainer     : mikezackles
Architecture   : i686 x86_64
Last update    : Вс 20 окт 2013 17:41:39
Description    : A multitouch X driver using the kernel MT protocol