ANoise
ANoise is a free and open source user-friendly app that allows you to play ambient/background noises
MoonPlayer
MoonPlayer is a free and open source video player for playing and downloading online videos from YouTube, Youku, and iQiyi, as well as local videos
JuK
JuK is a free and open source audio player, music manager, and audio file tag editor
Asunder
Asunder – free and open source graphical audio CD ripper and encoder for Linux
Spivak
Spivak is a free and open source cross-platform karaoke player
Diffuse
Diffuse is a free and open source player for music and audio files from cloud and remote storage
Tauon Music Box
Tauon Music Box is a free and open source, simple and comfortable music player for playing music collection for Linux desktop
Strawberry
Strawberry is a free and open source, multi-platform audio player and music collection organizer. Clementine Fork
FFaudioConverter
FFaudioConverter – free and open source batch audio converter and effects processor
SMTube
SMTube is a free and open source program for searching and watching YouTube videos