Currently Being ModeratedApr 21, 2013 5:22 PM (in response to trackforlife7)
"Other" is all of the data for all of the built in apps. If you delete its contents all of your built in app data will disappear. Some of what is contained in other:
- email messages and attachments
- Calendar entries
- Text messages
- MMS messages and attachments
- Genius data
- Music cover art
- Operating system settings
- Safari cache
- Game Center status
- Music catalog
Probably a few I've missed. There was a problem in an earlier version where deleted MMS messages left behind their attachments, but that has been fixed as of 6.1. Some people suggest deleting your music on the phone. DON'T DO IT! The reason that deleting music recovers some Other space is because it deletes cover art. But is also screws up your music, which will no longer play correctly.
You will find posts from people who said they recovered over 1 GB of space by just deleting old text messages.
If you want Other to be smaller you will have to keep less data on your phone; delete old MMS and texts, delete old email (especially from the "deleted" folder), clear the cache, eliminate cover art.
Your Other is so large, however, that there may be corrupt data contained in it (unless you send a lot of MMS messages with large attachments). If this is the case you should restore the phone as New.
For your other question, the easiest way is to copy your iTunes library folder from the old computer to the new computer. For the hard way, see: Syncing to a "New" Computer or replacing a "crashed" Hard Drive