VLC is my own personal favorite, mostly because it's so versatile, free, and it can read a ton of formats. I occasionally use WMP, but usually only for music, to save time importing it into iTunes.
winamp, wmp, quicktime, jet audio, vlc, and one real media player. I have them all in one computer... I wonder if I'm wasting the space...
My favorite player is VLC player.In this you increase sound up to 400%.VLC player comes various application.