Ahh yeah, that's the music player I've been working on since the beginning of the year called Aika. It's still pretty early on, but it's mostly usable so far, depending on your needs. I mostly use it as my daily player right now, except for a few odd cases (like Opus files).

Aika is a spiritual successor to my other music player, Benben, which looks very similar, but not exact. Aika has some different features and goals, is much easier to build, and is lighter on system resources. But Benben is much more mature and featured complete. My goal is to release Benben v1.0 by years end, put it in maintenance mode, then focus on Aika.