Mine is Strawberry since it has a ton of options and plays a ton of formats. It's also (distant) fork of Amarok 1.4 and integrates well with KDE Plasma. I'm curious what other people are using these days. What's your favorite player?
I'm also curious if anyone has any recommendations on this. I've used it for so many years that it's hard to switch to anything else! I've just been running it through Lutris on my main computer.