You can't, you should have synced them. You will have to purchase them again.
Try to reboot your phone. Also, make sure that you have synced your phone onto the computer you're using.
You have you reboot the iPod. Meaning that all the songs, movies, data on the iPod will be lost. Then is will be unsynced. Or just don't let your friend connect their iPod to your computer.
Nothing.
Only if the apps were synced to the computer before being deleted from the device before you synced it. Otherwise, no
It gets deleted for you.
An iPod can only be synced to one iTunes Library at a time (each computer has a different library). This means that, if you want to change the computer you manage your iPod with, it will need to be re-synced to the computer in question. To do this, connect your iPod to the computer you'd rather manage your iPod on. A popup from iTunes will say something along the lines of "This iPod is currently synced to a different Library. Would you like you sync this iPod to this Library instead?" Click Yes. After that, all the previous information from your other computer's iTunes Library will be erased and replaced with everything that you just synced your iPod with. From there, you can freely sync your iPod with that computer as you normally would.
You probably synced it to a new computer. Correct me if I'm incorrect. Does your mom have music on a different computer? If your mom does, you can open up itunes>go to file> library> back up. Then do the following procedures. Go to your current computer your iPhone is synced in, and then drag all your songs to itunes. Hope this helped.
What you have to do is make sure all of whats on your iPod at the moment is on the computer it's already synced to. Also make sure your iPod is set to manually manage music . Then you sync it to the computer you want it synced to, and don't worry about losing your files. when its synced, go back to the other computer and plug in your iPod and drag the folder with your music in it into your iPod. Then go back to the second computer and sync your iPod. All your files will then be transfered to the computer you want.
If it says that then connect it to iTunes on the computer you last synced it onto.
No, your music on your computer will be safe. However, bscause iTunes only allows an iPod to be synced with one music library at a time, the music won't be able to be synced to another computer.
Yes. You can use a program called "SharePod".
If there is music that is not on your computer or synced to your computer the computer will replace it with things it recognizes AKA music on your computer. to fix go on your ipod menu in itunes and click do not auto sync when plugged. also click manually manage music and you can put on your music from your computer on your ipod and be happy.