itunes Blank

My itunes has gone completely blank, I know this has happened to a lot of people and it is really frustrating.

I tried restoring my computer back, but itunes still came up blank.

The files are there but if I import them again there are no music ratings or playlists.

I've been away from home for 6 months so haven’t backed up the computer in a while.

My iphone got stolen recently so was going to sync my new one to itunes really soon when I get it, however I can't do that now as itunes is blank.

Please help!