I listen to my 5 Paraliminals on an MP3 player (Archos Jukebox Recorder 20) converted using Dell's Musicmatch Jukebox, and listen using a pair of Sony "Noise Cancelling" earphones and find a quality experience.
I have experienced positive results without worrying that I have lost any frequencies in the conversion.
I believe that a higher level set of earphones makes a difference, however.