VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Emit - Emit can stream from a Windows/Mac/Linux machine to an android/iOS device.
Knowthelist - Knowthelist - the awesome party music player Easy to use for all party guests
VPlayer - VPlayer - a free music player for VKontakte.
Song Director - Song Director is a program that plays and keeps track of all your music files.
Vinyl Music Player - A fork of Phonograph Music Player that "makes all Pro features free, as they used to be".