HT1206: One computer using multiple iTunes Store authorizationsLearn about One computer using multiple iTunes Store authorizations
I have two Itunes ID and have purchases under both ID's can I combine them ...
No. Apple IDs cannot be merged
From Here http://support.apple.com/kb/HE37
I have multiple Apple IDs. Is there a way for me to merge them into a single Apple ID?
Apple IDs cannot be merged. You should use your preferred Apple ID from now on, but you can still access your purchased items such as music, movies, or software using your other Apple IDs.