Well, I got my desktop up and running a Linux Debian distro. Went over fairly well. Yesterday I installed sudo, which doesn't come installed, and also a number of other small programs.... including a new looping software, SooperLooper. Linux uses a program called JACK to manage audio in and out. I had some pretty grave concerns about getting it working, but wasn't nearly as bad as I imagined.
At the moment I miss Mobius Looper, which is what I cut my looping teeth on (but doesn't run on Linux). Over the next few days I'll be trying to learn SooperLooper, and I'll also be looking into a DAW to process my recorded audio. I'll post back with the results :)