VortexBox is a free and open source (GPL v3) software that can turn just about any computer into a music server/jukebox. Yesterday, the open source company released version 1.5.
"The recent release of iTunes 10 does not work work with the old VortexBox DAAP server. We took this opportunity to replace the DAAP server in VortexBox with a better one. The new DAAP server not only works with iTunes 10 but it can server FLAC files to iTunes by encoding them as WAV files inline," the announcement said.