Welcome... do you mean iTunes music? If so, you can get MediaSync. Keep in mind that purchased music from iTunes is not DRM-free and this means that it is locked to iPod/iPhones and will not transfer over.
The easy fix is to burn the music onto a cd and then rip it off the CD.
thanks mediasync isnt working right for me.It wont let me start the download of it. It is reading the blackberry media sync installation failed to initialize.Please run the blackberry desktop manager with the administrative privilages and try again. I need help please