the same way with all of the other iphones
2000 songs
Yes there are many Apps out there ex: Find My iPhone and also if you have iCloud account setup you can remotely erase the data from lost/stolen iPhones
no
20,0000
Connecting your iPod to a new computer and connecting to iTunes should not erase the songs.
Resetting the iPod will erase all of the songs, so remember to back it up!
If your songs are already in the new library, you will not loose any of your songs.
No
You can erase songs off a CD only if you are using CD-RW.You open the folder where the CD is, choose the songs you'd like to erase and delete them like every usual file.if its not rw you cant
factory reset it or restore it
You can not send songs from iphone, that are stored in itunes
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.