wont help Donald above, but I found this on how to downgrade back to iTunes 10.7
http://www.emacconsulting.com/apple/itunes/downgrade-itunes-11-to-itunes-10-7/
I've just completed it and all is good again - told OSX to forget about reminding me to upgrade to 11
Note: There is a minor error with the instructions, re the .itl file ::
11) Open your iTunes Music Folder.
If you never moved your iTunes folder itâs located here:
Your HD/Your User/Music/iTunes
Or go to the Finder type: Command + Shift + G
Paste this into the the dialog: ~/Music/iTunes
If you moved it to another hard drive, you will know where to locate your iTunes folder.
12) Open the âPrevious iTunes Librariesâ folder.
13) Find the most recent copy of the âiTunes Library 2012-xx-xx.itlâ file.
Normally it will the last file at the bottom of the list.
14) Drag a copy of the file into the iTunes folder.
15) Delete the âiTunes Libraryâ file.
16) Change the name of the âiTunes Library 2012-xx-xx.itlâ to âiTunes Libraryâ with no .itl extension.
For #11: I went to "YourHD"/Users/"Your User"/Music/ITunes
(bits in quotes will be different for your mac)
#15 and #16, the old file was called "iTunes Library.itl" - the instructions make out it wasnt. thus in 16 I renamed "iTunes Library 2012-12-03.itl" to "iTunes Library.itl"
All is good again with my music - including play count updating when using CrossFade đ