Puzzled why on my PB 1.5 w/OS 10.3.8, iTunes 4.7.1 Advanced Menu wants to convert CD selections to mp3, not aac; while my Cube w/10.3.8/iTunes 4.7.1 Advanced Menu wants to convert them to aac, not mp3. I guess this should go to the Apps List, but I'm too tired to go subscribe for one question. TIA -- rs