squeezelite and USB DAC

[mk01]

@Killerbee

prepared firmware from 11.April and 3.13.6+ kernel from ->next.
both are in devel (xbian-package-kernel 1.3.7 and firmware 1.4.15).
((don't install packages with suffix -6q by mistake - it's cubox))

also check those kernel scheduler parameters - although I have feeling for those parameters to be active "Automatic process group scheduling" and "Control group support" must be compiled in.
(http://archphile.org/howto/troubleshooting-pops-and-clicks)