export to itunes changes pitch

I'm recording a simple 2 track (intro & exit music with 20 minute vocals for radio program) audio on GB2. I'm trying to export to itunes to create aiff because I ultimately need my program as mp3 for the radio station.

Problem is, after I export my file to itunes, the pitch is lowered! Both my intro music and my voice. There must be something simple I'm missing. Help!

The file sounds perfect in Garage Band.

Thanks in advance!
Don