iPhone 4 With 2 Computers Not Working?!?!?!

[Orange™]

MBP: Photos, Apps, Rings-tones, Books
PC: Music, TV, Movies

How can I sync my music from my PC onto my iPhone that is registered to my iTunes on my MBP???

I check on the "Manually manage music and videos" on my MBP, but when I plug my iPhone into my PC, it's unchecked. If I check it on my PC, it says it will erase everything...

PLEASE HELP!!! I'm usually very savvy with software, but I'm at a loss.
(Yes, i did Mroogle it, answers weren't helpful)

 

[Orange™]

Look, I realize that this isn't the most interesting thread, but someone here has to know the solution. I can't be the only one in in this situation.

Thanks in advance!

 

[Sneakz]

Can't be done. Only one library can be synced unlike iPods.

 

[Slip Jigs]

You can only sync to one computer at a time. When you click Manually Manage, that essentially telling that computer it's going to be the one, and will erase your phone.

 

[ARF900]

Can't be done. Only one library can be synced unlike iPods.

This. Move your stuff to one computer.

 

[Orange™]

Thanks everyone for the answers! Saved me a lot of time!

 

[djrobsd]

This is yet another huge EPIC Steve Jobs fail. I've been saying this for 2 years now but the fanboys on this board simply insult me and try to start a flame over it.

However, rather then listen to all the Fanboys, I decided to find a solution, and you'll be happy to hear that it's not too difficult. A little Hex Editor, and changing a couple XML files on BOTH computers, and viola, you will permanently be able to sync any iphone, ipod touch, and ipad with both of the computers in question! YAY!!

http://www.iclarified.com/entry/index.php?enid=2137