If you mean lose it on your computer, then I would recommend re-downloading it.
no you dont lose your itunes library if you buy a new ipod
No, it does not take away your iTunes money.
No, you will not lose your account money. The money you register is related to the account, not the actual iTunes software.
No all of your stuff will be there.
The song gets imported to iTunes
no
yes on itunes it says
If your hard drive crashes, you lose your itunes movie library. There are two types of hard drives, those that have crashed and those that have not yet crashed. A number of places sell external backup drives.
nothing will happen. iall my songs on itunes are illegally downloaded and nothing happens. itunes are such a rip. $1.69 for a song, i dont think so.
Nothing happens. Both can coexist with the same iTunes account with no harm done.
no. Only the iTunes software is updated your music is not touched. If you re-install it, some data may be lost (But that is not what your doing)
yes. it will save your files.