Tech

so we've all bought a cd and had that hidden song at the end that causes the track to be 14 minutes long with 7 minutes of silence in the middle. is there a simple program (or a way in itunes) to crop an audio file down so that i just have the songs? i have a mac and itunes (obviously) but i haven't found anything that will do this simple task for me. help?

EDIT: FOLLOW-UP QUESTION.
thanks shauk for the advice on itunes, it worked great. so i had this idea now to crop songs down to 15 or 20 seconds and use them as ringtones, for free instead of paying the $2.50 or whatever. i can cut the songs down and get them on my phone, but the file size is too big to use as a ringtone (or so the phone tells me). is there a way in itunes to lower the quality of a track and therefore lessen the file size? thanks!

__________________
-Tim-

~I swear sometimes i feel like i'm married to a child.
~You better watch who you're calling a child, Lois, cause if i'm a child than you know what that makes you? a pedophile. and i'll be damned if i'm going to stand here and be lectured by a pervert.