ITunes have changed all my music photos around?

I used itunes on my computer the other day to put some music on my iphone but when I went back later after unsuccessfully putting music on my phone album and single cover photos were all changed around. Very annoying as at a quick glance you think its one song but it's not. Why has it done this and how do I change it back? Also all my music is brought from iTunes

Added (1). @comment - I broke my other iphone using torrents and downloading music, give me one that works and I'll use it.

Stop using Itunes dumbass. You can download free music with Youtube2mp3 converter. Or torrents.

The Itunes database is subject to corruption. All your music and it's "folder.jpg" files will all be in the right place, they'll just be messed around in the database. There are utilities that will sort this out, frankly I gave up on Itunes and now use MediaMonkey!

I'm afraid what you have to do is go back to the albums click "info" tab on the songs then re download right cover picture to right album that's what I did and now they're fine.