Normalizing a Garageband track

No, GarageBand doesn't do Normalization. You'd need to export the track and use an Audio Editor that has that feature:

http://www.thehangtime.com/gb/gbfaq2.html#audioeditors

and then import the recording back into a track.

I don't believe it does. You can import into Audacity and Normalize there. Yet, normalize in Audacity is limited because it peak normalizes to -3db instead of 0db or 0.1 db.

Take a look at RMSBuddy fronm Destroy FX (free). It doesn't normalize but gives you go peak and RMS (average) level measurement. Then you can see how much you can boost without clipping (peaking over 0db). Still this is not a perfect solution. You can only boost a track by 6db in GarageBand and this still is not really normalizing.

If you have money to burn take a look at Final Plug from Wave arts or the loudness Maximizer in the Izotope Ozone mastering suite. The sell for about $200 -$250 US though.

For free you might look at these plugins: http://sounds.wa.com/audiounits.html haven't tried them myself though

Powerbook G4 867mhz Mac OS X (10.4.5)

To add to this: If you're familiar with the way GB stores the audio files, you don't have to export them, and you can even manipulate them in an external editor while the GB project is open.

Disclaimer: I don't take any responsibility if you mess up your song by doing this, and you should only try it if you know what you're doing. 🙂