I'm in the middle of making this composure in Garageband. The volume is absolutely fine when it is played in Garageband, but when i convert it into an MP3 or AAC or whatever, the volume is dramatically limited. I tried adjusting the master volume track and it doesn't make any difference. It's exactly the same volume whatever level i put the master volume at. Ive done loads with Garageband and i've never had this problem before. Can anyone help?