I would to get an audio editor (sound forge, wavelab, cool edit) and normalize to around -0.5db; this will scan and adjust an entire sound file to that level. An alternative is find the peak db level within a track and adjust volume level accordingly. Avoid going over 0.0db else you'll end up with distortion.

You might even be able to do all that within Nero through it's own audio editor... not 100% certain on that tho.

Is there ne way of makin all mp3 files play at the same volume? I know they vary depending on how they were encoded and wot not, but can u set the level u want 2 play them at? At the moment some are much louder/quieter than others - I'm burning with Nero if that makes ne difference. Cheers