Using Nero - under Edit > Preferences you can set a filter (i forget the name) that will level all of the songs you want to burn to a common mean volume. Careful not to set this too high. I usually set it at 25%, which seems low I know - but it works for me. You might want to try burning a test CD to see what level works for you. This is a great feature for Nero because you can make compilation's where all of the songs are set at roughly the same volume.