No.
No.
It depends. Do you use iTunes with your iPod? If yes, then why not just sync it again and get all your songs back? But if you mean your iPod actually went on your computer and deleted all your music, which i don't think happens very often, then your going to have to download all your music again!
You can try iPodCopy for like $22.
You can't.
yes
You can't get them back
mmm the same way you got them to the ipod
Why does iTunes lose your music library?If you have put any new music on your iPod lately, your computer could have synced your iPod and deleted all of the music.
When you sync your iPod Touch to iTunes, your music and your apps are synced into iTunes. Nothing happens to the apps, the best description I can think of for what it is would be a backup for all your files on your iPod. If something happens to your iPod, you can order a new one and sync it, and all of your apps and music from the last time you synced your iPod will be put onto it. That is why you are recommended to sync your iPod often, just in case something happens to it, whether your iPod gets its files deleted, or if it gets broken. To learn how to do this, look in the Related Questions below.
If it is an ipod you can just sync it with itunes.
you dont unless you resync it to the backup