Music editing software?

Does anyone do this, edit music? I really need to start! I have some fitness songs that are VERY LONG, and usually make me go overtime in my classes :( I want to start doing basic clips of music... you know, deleteing a minute from the end of a track. I'm sure it's very easy to do (and I even bet the MAC comes complete with these capabilities) unfortunately I'm still on a PC and don't think I have any software capable of such tasks.

I was googling this today and found Adobe Audition 2... it only comes with a free 30 day trial however. I only want to do *basic* edits though... so, could a free-ware type of this software do the job I'm trying to achieve?
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