MusicScript is an Open Source music scripting language for Linux. It is capable of creating complete songs from a script, using drum machines, synthesizers, samplers, and many effects. With MusicScript, there can be an infinite amount of loops, tracks, samples, effects, etc. You create the song as a script file, which MusicScript will interpret and turn into a wav file.
mvComicsMaker (mvCM) is a free graphics editor for creating bitmap and vector animations under Linux. mvCM allows you to use bitmaps together with vector graphics and combine indexed pictures with true color pictures. The final animation may be rendered into MVA, FLC, BMP, or PNG format. The main goal of mvCM is to help calculate frames of animation.
mxCrypto is an extension package that provides OO-style access to the cipher algorithms and hash functions included in OpenSSL/SSLeay, a very nifty cryptographic library originally written by Eric Young and now maintained by the OpenSSL team. Its main purpose is filling in the missing parts in Andrew Kuchling's pycrypt export package with high quality implementations. Due to the ITAR export restrictions on cryptographic software, Andrew's implementations are not legally downloadable from outside the US.
MP3SQL allows one to index MP3's with MP3Tags into an SQL databse such as MySQL. Also included is an example PHP3 script for searching the database. There is also an playlist add function and an great playscript that reads your playlist and if there is no entries it randomizes from all your mp3s.