Audok is a free and open source music player for Linux. It comes with streamripper and build-in converter support. It is written in python and released under GPL-3.0 license. Using audok you can play mp3, wav and flac files and record wav files. It also comes with youtube-dl support and you can also download mp3 files. Using the build-in converter you covert wav, ts, flac, mp4 files to mp3.