Yes,If u have Bought it in iTunes u can log in and redownload it at itunes on pc or u idevice
Yes but if you go into music/itunes and back-up the itunes folder onto a USB stick or something then put it back on your computer once you reinstalled itunes then it should be fine.
In his music video want u back says he has an iPhone.
Yes and software version
you dont
No, you will only lose like your music, photos, ringtones, contact and what ever iTunes offers to sync. Restoring to a previous backup can probably lose your jailbreak. Restoring your device completely removes your jailbreak.
One can address software issues on their iPhone by updating the software or restoring the phone back to factory settings, if everything fails, one can take the phone to the Apple store to get help.
Unless that computer has all your music, you will lose all the music on your iPhone and it will be replaced with their music. So instead, if you just want their music but still keep your music, just drag the music files to your iPhone.
Unless you "Transferred Purchases" to your iTunes or made a backup of your iPod, there is ABSOLUTELY no way to.
try turning it off. if your talking about iphone press pause on the music and go back to home.
It's not available on the IPhone just the IPod & IPod Touch. This is meant to stop you from transferring your music back and forth.
Yes, you can use the iPhone PC cable to copy music from your iPhone to PC.
You buy music through the iTunes store and download it to your iPhone.