Goggles Music Manager (GMM) is a free opensource (licensed under GPLv3) music collection manager and music player that automatically categorizes your music files based on genre, artist, album and song. It supports gapless playback and features easy tag editing. Googgles Music Manager is fast light-weight and starts up very quickly and there is no delay with splash screens
Kid3 is a free opensource tool to easily tag multiple MP3 files (e.g. full albums) without typing the same information again and again and allow you to control and edit ID3v1 and ID3v2 tags. It’s one of those things I started doing so enthusiatically and then give up after a few tracks and finally this should help me get around this.
aTunes is a multi-platform Java based fully featured audio player and audio manager aTunes supports Windows, Linux, Unix operating systems. aTunes currently plays mp3, ogg, wma, wav, flac, mp4 and radio streaming, allowing users to easily edit tags on the audio files, organize music and rip Audio CDs.
VLC media player is a free opensource cross-Platform media player and streaming server for Linux,UNIX,Windows, MacOS and many other *NIX versions. VLC media player is a highly portable multimedia player for various audio and video formats (MPEG-1, MPEG-2, MPEG-4, DivX, mp3, ogg, …) as well as DVDs, VCDs, and various streaming protocols. It can also be used as a server to stream in unicast or multicast in IPv4 or IPv6 on a high-bandwidth network.