Can't copy music from new computer

[iohass]

I got a new computer recently and after installing itunes on it, i can't copy new music on my phone as it tells me that it's synced with another library and can only sync with one computer.

I tried checking off the "manually manage music and songs" option but it says that if i do that, it will erase all my current music that's on the phone.

What should I do?

 

[-aggie-]

You need to authorize the computer in iTunes. You also need to copy the iTunes library from the old computer (after consolidating the music)