Q: after a power outage my Itunes library is lost

I am North of the Arctic circle at work, and today while talking to my wife she informed me that the family Itunes library is empty. Here are the details

1- I have a Mac mini server running in the basement on a flat screen TV, I use this as my home enertainment center. There are Apple TVs on the rest of the TV's in  the house and I have home sharing on

2- thunder storms have caused a power outage

3- The library has been cleaned. The items i still had for down load are still down loading, but all my movies, songs, apps, ect are not listed.

4- I was always going to get around to backing it up, and didn't. Iknow, I know

I think all the items are still there, I tunes just can't find them. One of the two hard drives was approaching full and i was looking at relocating the itunes files to the second hard drive, BUT being a novice with computers I was stumbling and never got it done. I had looked into it and remember scrolling through the screens that had been listed in forums.

I wonder if i did move the files and the restart finished what i had screwed up?

So here is the questions

How do i search for Itunes files? the program runs, but the data is not there

How do i teach Itunes to look where i dropped the files when and if i find them?

thank you for looking, thank you more if you have an answer