I used to use DBPower Amp for Windows, however I'm not a Windows user anymore. Does anyone know a good audio re-encoding program for Mac? I would like to change some of my Library to AAC since it takes up less space, can anyone tell me of any programs that can do this?

I thought iTunes would do that....

It does...
Set iTunes to use AAC when ripping CD's adn stuff...

The ctrl+click (right-click) on the file and select convert.

STUPID!!!!! I'm soooo soorry, that's such a noob question, I completely forgot!! Thanks for the simple reminder!!

Just remember that converting from one lossy format to another will always reduce the quality.

You're better to re-rip to AAC.

Always read stuff that will make you look good if you die in the middle of it.