Open Source Apps with 'Create PlayList' feature for Linux
VLC is a free and open source cross-platform multimedia player and framework. Owned by the non-profit organization VideoLAN.
Audacious is an advanced audio player.
Funkwhale is a community-driven project that lets you listen and share music and audio within a decentralized, open network. It can be self-hosted and is libre, open source software.
cmus is a small, fast and powerful console music player for Linux and *BSD.Input/Output Plugins
Goggles Music Manager is a music collection manager and player that automatically categorizes your music files based on genre, artist, album, and song.