What kind of music?
Is it a rock concert? If so, it may be loud enough that you just have to fade out the ends of each piece a bit.
If itÂ´s classical then you may have the problem of people murmering or coughing during the performance...best thing to do is find each little spike and try cutting it very finely out.
As Whappo says, Audacity is the way to go.
...and welcome to cdfreaks