Hello everyone! I hope this is the right place to ask this question. I was wondering if anyone new a program or setting that will set all your MP3s or AAC files to one volume level as its annoying to have to turn the volume up or down when listening to them on your iPod or your stereo and constantly having to turn up or down the volume cause its ether to loud or to low of volume.

Thank you
Apple IMac 2.4GHz Intel Core 2 Duo, 4GB DDR2 PC2 6400 Ram, 250GB HDD, Mac OS X Leopard 10.5.6