Just Winamp 2. Used that shit for 20 years and never changed it, because it works perfectly for me.
I have used iTunes in the past, but I don't like it. It always wants to update itself, it's friggin' overloaded for a music player and it constantly wants me to buy some stupid shit. I also tried Groove music and while that one is alright, Winamp is just smaller and faster. So yeah, I'll just continue sticking to Winamp. Some people told me that Foobar is better. Other told me to at least upgrade to Winamp 5. But I don't care. Winamp 2 is perfect. For me at least. =P
On my smartphone, I use whatever the hell the Blackberry music player is called. That is all.
Official member of VGC's Nintendo family, approved by the one and only RolStoppable. I feel honored.