Trying to sync an iPhone across multiple computers has never been an easy task. MultiTunes is a new tool for jailbroken phones that allows you to set up separate profiles to sync your iPhone's music across as many computers as you want.
MultiTunes is easy to use and doesn't require a lot to set up. Tap the plus sign in the app to add a new computer to the list, plug your phone in and then MultiTunes will sync the music library as if it's brand new. It doesn't delete your old data or music. You can then switch libraries in the app to load different accounts. If you have multiple computers, it's a handy tool to have around. It's a free download and can be found by searching for MultiTunes in the Big Boss Repository.
MultiTunes: Sync Your iPhone With Multiple iTunes Libraries [Addictive Tips]