LAM
LAM is a site that aggregates music made with linux and spits it back out at you in the form of HTML, RSS (podcast), and M3U. I wrote it as an excercise in learning Ruby on Rails while reading the Pragmatic Programmers' excellent (as always) book Agile Web Development with Rails: A Pragmatic Guide.
It was, and is, a lot of fun. More fun than I've had doing web-stuff in a very long time. But the real reason for this post is so that it will be linked from somewhere so Google will eventually pick it up and return it on a search for "linux audio music" or "music made with linux".