kPlaylist is a free PHP system that makes your music collection available via the Internet. kPlaylist is a music database that you manage via the web. With kPlaylist you can stream your music (ogg, mp3, wav, wma, etc.), you can upload, make playlists, share, search, download and a lot more.
Podcast Generator is a free web based podcast publishing script written in PHP: upload media files (audio-video) via a web form along with episode information and automatically create podcast w3c-compliant feed including iTunes specific tags. It also features a comprehensive web administration.
AmpJuke will act as your streaming server. Besides music streaming AmpJuke can fetch album covers/images/lyrics automatically using various webservices from last.fm, Bing! and other sources. Scan+import tags from as many tracks you like, use the favorites as well as a bunch of other personal settings to customize the way AmpJuke operates.