Linux MIDI Howto
From setting-up ALSA through to writing MIDI applications, this HOWTO covers everything you need to know about MIDI under Linux.
m-dist - Audio/MIDI Live Linux CD
m-dist is a Live Linux CD (no install is needed as it runs directly from disc) for audio and MIDI use. It includes a low-latency patched kernel, ALSA, Ardour, MuSE, Jack and a few other goodies.
Linux MP3 and Vorbis Howto
This HOWTO covers creating MP3 and Vorbis files from live recording as well as backing-up CD's, streaming server setup and transcoding.