fortunately, i have the old itunes version executable file
Uninstall your current version of itunes and install it with the following package
[link removed]
it is up to you to be paranoid if i infected it with a virus or whatnot but i assure you, it is the original file i downloaded from apple's site with no changes done to it whatsoever.
reply back after you have downloaded it. i will remove it from my dropbox afterwards. if you don't reply back, i will remove it in 2 days.
NOTE: uninstalling the current version of itunes and installing a older/previous version of itunes MIGHT cause your music library to be messed up. Try and run iTunes 10 first to see if you encounter an error message. If you do and if you did not update to the newest version of itunes too long ago, you still have a chance to fix that
This is on Windows 7!
1. Open My Computer
2. On one of the tabs, click "Organize"
3. Click "Folder and Search Options"
4. Go to the tab "View"
5. uncheck the box that says "Hide extensions for known file types"
6. Click "OK"
7. Open "Local Disk (C

"
8. Open "Users"
9. Open "[Username folder]"
10. Open "Music"
11. Open "iTunes"
12. In this folder, you will find a file called "iTunes Library.itl". Save a copy of it onto your desktop just in case.
13. Open Previous iTunes Libraries
14. Inside the folder, you should find files named "iTunes Library [date].itl"
15. Delete "iTunes Library.itl" from the iTunes folder
16. Copy and paste ONE of the "iTunes Library [date].itl" and rename it to "iTunes Library.itl"
17. Open up iTunes and if it says something about iTunes Library.itl being too new or outdated or something, try another of the "iTunes Library [date].itl" and redo the steps.
18. If one of the file works, congratulations! You have iTunes 10 back.
however, if none of the file works, in the "iTunes" folder, put the "iTunes Library.itl" you have on the desktop (as a backup) back into the "iTunes" folder and update it back to the most current version of itunes.
if you don't mind redoing your music library, then delete the "iTunes Library.itl" (move to the desktop just in case) and run iTunes 10 and it should make a new iTunes Library.itl, one that'll be compatible with iTunes 10.
If it shows some sort of error message again, then move the "iTunes Library.itl" from your desktop back into the iTunes folder and update to iTunes 11
I hope you will be able to go back to iTunes 10! Best of luck to you!