DuMP3 is a duplicate and similar file finder. It finds exact duplicate binaries by hash, similar text files by substring content, images (JPG, BMP, GIF, PNG, etc) by color and audio files (MP3, WAV, OGG, etc) by wave data. Future: fonts, video.
Open source DRM for MPEG-4 and MPEG-2 adhering to ISO/MPEG IPMP open standards (MPEG IPMP Hooks and IPMP-X), ISMAcryp and OMA DRM 2 specs. Includes CA, PKI, DOI mgmt, ISMA streaming, license server, encoding/encryption, player, plugin architecture, etc
JukeX is a flexible jukebox system written entirely in Java. It is object oriented, and has flexible metadata support for the tracks, as well as a full API for developing custom client software to use it.