Could itunes be slowing down my computer?

My Mac mini has been running sluggishly (taking time to respond to movements of the mouse & keyboard, etc). Someone suggested running the activity monitor in the hope of discovering what the problem could be. I've done so, and the only thing I notice is that when I'm playing music on itunes the %CPU stat is something like 50 or 60%. Is this normal? Could it be the source of the slow down? If so, what do I do about it?

Thomas A Reed's Mac Performance Guide - http://www.reedcorner.net/mpg
Instructions on using Console to analyze slow computer response [Linc Davis] -
https://discussions.apple.com/message/18143592
I guess it depends upon what iTunes is doing. The newer versions have become so bloated with Genius, Ping, iTunes Store, Match, etc. My version 7.5 uses 6% of my dual CPU when playing music and I am running a 10 year old Mac.

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Could itunes be slowing down my computer?

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