Here is a screenshot of a music player I've been making for a while. It uses GTK3, GStreamer, and some other libraries. The eventual goal is something like foobar2000 that's open source and for Linux. What do you think? https://www.reddit.com/r/linux/comments/7fxyc0/here_is_a_screenshot_of_a_music_player_ive_been/
@angristan hey, someone else who wrote a music player!