Once again updating and hoping (praying) somebody will get this:
I still cannot get Library Sharing to work, and I think it is a bug with Windows7 64 Bit Version:
1) Uninstall
I have uninstalled everything as per Knowledge Base
http://support.apple.com/kb/HT1923
I even removed all regstry-entries pointing to Apple software (mainly under HKLM and HKLU). I removed all "Apple Computers" Folders in USER\AppData
2) Re-Install
Reboot & Clean reinstall
New empty itunes library (Removed old itunes Folder in MyMusic)
Imported one CD
3) Sharing
Turned on sharing in the settings.
Started up another PC: nothing:
Started up Apple Remote (2.0.1 - 229) on iPad (iOs 4.2.1): Entered correct four digit code in Itunes
A greyed-out Itunes symbol without a name appears (normally reading "BlaBlas Library")
4) Sharing Part 2
Using the other Computer (Notebook W32bit)
using sharing feature in the other direction (Notebook -> Windows 7 64Bit PC) works
Apple Remote to this PC also works.
5) Sharing Part 3
Created an entire Blank new User with a new empty Itunes Library. Imported one CD: Same Problem.
Conclusion: Bonjour or some other component of ITunes sharing is broken. What should I do. Can I leave a bug report somewhere?
Please help me!