I would like to find a way to compress the dynamic range of .mp3 tracks so my classical music will all be audible in my noisy little car. I have an mp3-CD player in the car, so I could burn these "special" tracks onto CD-Rs and use the on road trips. i don't know of anything in iTunes that would allow me to control the dynamic compression. any other ideas? Freeware/cheapware is particularly welcome. 