For me it's Windows Media Player all time, with CCCP installed. BTW- What is Hyper bass in WMP? !
Sorry,its not 'Hyperbass' its 'TruBass'.You can get it by right clicking on the screen when in now playing mode and clicking enhancements->SRS WOW effects.
I am actually surprised to see that most of the windows users are not using WMP for playback.WMP with TruBass and SRS WOW effects enabled provides supreme sound enhancement.