JuK is described as 'audio jukebox application, supporting collections of MP3, Ogg Vorbis, and FLAC audio files. It allows you to edit the "tags" of your audio files, and manage your collection and playlists. It's main focus, in fact, is on music management' and is an app in the Audio & Music category. There are more than 100 alternatives to JuK for a variety of platforms, including Windows, Linux, Mac, Android and iPhone. The best alternative is VLC Media Player, which is both free and Open Source. Other great apps like JuK are foobar2000 (Free), AIMP (Free), Clementine (Free, Open Source) and Strawberry (Free, Open Source).
VLC is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as DVDs, Audio CDs, VCDs, and various streaming protocols. Features Simple, fast and powerful media player.
foobar2000 is an advanced freeware audio player for the Windows platform. Main features Supported audio formats: MP3, MP4, AAC, CD Audio, WMA, Vorbis, Opus, FLAC, WavPack, WAV, AIFF, Musepack, Speex, AU, SND... and more with additional components.
Freeware Winamp-like media player, based on BASS audio library with support for large number of formats and playlists. It works with multiple playlists immediately (tabbed window), allows creation of bookmarks and also has a playback queue.
Strawberry is a music player and music collection organizer. It is a fork of Clementine released in 2018 aimed at music collectors and audiophiles. The name is inspired by the band Strawbs. It's written in C++ using the Qt framework.
Audacious is an advanced audio player. It is free, lightweight, based on GTK+, runs on Linux and many other *nix platforms and is focused on audio quality and supporting a wide range of audio codecs. There is also support for several visual styles from Winamp.
MediaMonkey is a music player and a music library manager with support for 50,000+ files and many features for organizing, tagging, converting and burning your music. It also has advanced podcasting and syncing features.