This computer is already associated with an Apple ID

I had to reinstall Maverick and reformat my hardrive on my MacBook. I have an iCLoud account I made with a name#me.com which I ade about three years ago. Many years ago I created my iTunes account with a *.edu email.

Now that I have reinstalled Mavericks and downloaded iTunes I cannot download my iTunes match beaeuce of this horrible message it gives.

So all the music I bough cnanot be accessed for 90 days and then when I switch to the *.me.com email I guess I will lose my iCLoud account.

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Can anybody hlep me please?

Rory Lewis