having troubles getting all the music off of my iphone 4 ..its all unchecked on my library when its plugged in but when I sync on the computer it douse not come off the phone and all the music is still there.

You don't need to uncheck the items in iTunes.

Select the Music tab, uncheck Sync Music and sync the device.

You can only sync an iPhone with one computer at a time. If you sync with a different computer the music on the new computer will replace the music from the previous computer.

chad_11 wrote:

so I am clicked"on this Iphone" all the music is unchecked but when i click on the music tab to sync music it wants to remove existing music , movies and more .. and replace with the library with that i have on the computer which is all the same but will my iTunes purchases disappear ?

They will be removed from your iPhone but nothing will be removed from iTunes on your computer.

yes that correct and my iphone has only been connected to the one im currently talking about .... i have a ipad thats on the apple acount also but it has never been pluged in to the computer so that should not effect it. or should i just hit sync and hope for the best ahah

Connect the iPad, back it up, then restore it.