I use Winamp for music now.
I did use Windows Media player, but I got a bit frustrated with it since it started to not play videos correctly, and found Winamp to be nice and tranquil, with it being able to pop up at the top of the screen rather nicely with the skin I added.
I love how it has sound plugins, so I can play all my audio files unrelated to usual audio, like computer MODS, and all that. Amazing
It does have the random time where it crashes and sends the PC down usually with it, but that is very rare.