>AVlinux seems to be based on Debian Stable. Not sure if there's a repo
>for if you want to make a customize iso.
 
There is a whole section on the AV linux manual pdf that describes how to create a "persistent" bootable image on a usb stick.
 
See the AV linux web page:
http://www.bandshed.net/AVLinux.html
 
There is a link about half way down for the pdf format manual.
 
I have used a AV linux image (ok not a persistant one) to work with a friends HP laptop and record with Ardour [1] while Hydrogen was running. The latency, according to qjack was 25ms - not as good as my home setup but hey.
   
John T.
[1] - we used two usb sticks - one with the operating system and one to record on.