No.
You erase everything from your iPod by connecting it to iTunes and click on iPod and click on restart.
You need to delete it trough Itunes or similar software.
Yes you can erase songs from your ipod. If you have the iTunes software just go to your music click on the song song or alblum once and press delete or backspace.
To 'unjailbreak' an iPod Touch, you have to do a system restore, which is available in the iPod Touch home menu in iTunes. This will erase all content that is on the iPod Touch, including bookmarks in Safari and contacts in the Contacts.
plug the ipod into your computer. on the left pane in itunes, click your ipod. Click restore settings.
click erase
Updating the iPod Touch software erases the jailbreak. You can update, but it will erase your jailbreak.
If you have iiOS 5, then you can go into your settings and erase all content and settings from there you can restore to an iCloud backup
you dont. you can delete them from your itunes program but not from your itunes record
restore it on itunes
no
no.