Well, I have to say that Harmonoid is the best one I’ve found, it has a ton of cool features, it works and it allows you to be able to see your collection by album and it doesn’t use Electron. Right now its development has stalled a bit but it’s still pretty much in good shape, though.
TDE still supports it, but I’m pretty sure KDE no longer does. So you can still get it, but it will require a little extra work.
I’ll probably end up using a streaming server or something. I use too many disparate devices these days where I want things to work more like Spotify instead of your traditional Winamp style player.