VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Knowthelist - Knowthelist - the awesome party music player Easy to use for all party guests
SMPlayer - SMPlayer is a free video and audio player for both Windows and Linux that allows you to play almost all media files without having to install additional codecs. Read more about SMPlayer.
Museeks - A simple, clean and cross-platform music player
MPV - MPV is an audio and movie player based on MPlayer and mplayer2.
Song Director - Song Director is a program that plays and keeps track of all your music files.