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.
You can't get them back
yes
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.
If it is an ipod you can just sync it with itunes.
you dont unless you resync it to the backup
you cant. their gone forever