HT4627: iTunes Store: Associating a device or computer to your Apple IDLearn about iTunes Store: Associating a device or computer to your Apple ID
Currently Being ModeratedJan 15, 2013 11:34 AM (in response to Cathy Mather)
No Apple only lets you change the Apple id once every 90 days. Where are your current purchases sited?
You could out them on one machine, Authorise that computer so you can play and sync tracks and use just one id for purchasing going forwrd.
If you had two comuters you could link by home Sharing copy all the files from one computer to the other and still have each computer use a separate Apple ID for purchases.