I am in a bit of a situation. I would like to purchase the HTC Desire HD, but currently have iPhone 4. I have had iPhone for a long time and so have built up a lot of tunes in my iTunes. If I get the HD, can I keep my tunes? If the answer is yes, how do I go about it? I have entered all my details and just need to press the confirm button to order the HD, but this question is nagging me. Thanks for your help.