Originally posted by: phaxmohdem
I think with MP3 encoding you'd have to be doing hella encoding tasks to see any benefit. Like converting hundres or thousands of WAV's at a time, or some hellaciously big audio files. Otherwise, I doubt you'd see too much real world difference between 32/64 bit.
Refer this this thread for better info:
http://www.hydrogenaudio.org/forums/index.php?showtopic=33685