don't want to set up a separate box w/avlinux if i can help it - wanna see if this is pclinuxos-able.
If you are familiar with qjackctl, you should have no problems. The card should
appear in the Setup page, at the Input Device/Output Device,
click the > to see a list of system sound hardware devices.
There is a qjackctl wiki at http://en.wikipedia.org/wiki/Qjackctl
the last link has screenshots showing the connection process.
You may have to untick the Realtime checkbox on the setup page,
to run it as normal user. A new bug, or config oddity now exists.
Actually, you could run both avlin and pclos from a live cd dvd or usbstick install,
and make a comparison test. The barebones pclos may have an advantage,
since av has included a wide array of apps.