Find and describe linkshttp://github.com/rjp/linkylinky
linkylinky finds URLs in text and, with the help of plugins, describes them.
URL catching Jabber MUC bothttp://github.com/rjp/ribot
The ribot bot sits on a Jabber MUC and uses the linkylinky library to fetch information about the URLs it sees. The default behaviour is to fetch the initial 16k of the URL and look for a <title> tag. Plugins are provided which return more useful information - for example, the twitter plugin returns the text of the tweet.
Self-referential album arthttp://rjp.github.com/cdcover/[Source]
Shell scripts and ruby code to generate album or track art from the music's own waveform.
CDmeme parts generatorhttp://cdmeme.trakr.nu/
Simple Sinatra app that utilises the flickr API and some screen-scraping to randomly select the parts for your album cover and remembers them in a database for later retrieval.
Fake album covers etc.http://fakestuff.org/
Tumblr with both cdmeme- and none-cdmeme inspired fake album covers (and the occasional fake book.)