Yes. Of course.
You do not have to delete itunes to upgrade. Simply click HELP > CHECK FOR UPDATES
Downloading and installing the iTunes software will not delete anything.
Downloading and installing the iTunes software will not delete your iTunes library of music and movies etc.
You can delete them from the computer on iTunes.
No it will not delete the music.
To delete a song from your iTunes Music library you can right click on the song title and select Delete, or Select Delete from the Edit menu. click delete button on your keyboard
In Itunes itself, just press the delete key. If you want to delete from the iPod itself, call up the contents when it is plugged in, highlight (by clicking) what you want to delete, then press the delete key. Alternatively, just delete it from Itunes then sync your iPod - it will cope exactly what is in iTunes.
delete it on your itunes that plug your ipod into your computer and it should automatically delete it
delete it from your library in itunes
You need to delete it from your Itunes account.
you dont. you can delete them from your itunes program but not from your itunes record
a) I am supposing you are not the administrator of the Mac b) I do not believe you can delete iTunes from a Mac