I have a cool little piece of freeware for listening to trance files, Zulu DJ 2.01 by NCH Software. You can slow down or speed up voices, play two tracks simultaneously and crossfade,balance volumes, add effects and EQ, and even define loop sequences from the files.
I like to slow down male voices so they are deeper and add a delay, while using a subtle music track looping in the background...nice...
Does anyone else have any other audio utilities they use to listen?