Sorry, I should have explained this step better. Easiest way to install the bspatch utility should be using "homebrew" (see:
http://brew.sh).
Here is a detailed instruction for the whole process of getting iTunes 12 Beta running on Mavericks:
I. Download and install the following Installer-packages from Apple:
http://swcdn.apple.com/content/down...y8iyikkvlfo7ve50hcnv7756uxuw/MobileDevice.pkg
http://swcdn.apple.com/content/down...ltkjay8iyikkvlfo7ve50hcnv7756uxuw/CoreADI.pkg
http://swcdn.apple.com/content/down...ultkjay8iyikkvlfo7ve50hcnv7756uxuw/CoreFP.pkg
http://swcdn.apple.com/content/down...y8iyikkvlfo7ve50hcnv7756uxuw/iTunesAccess.pkg
http://swcdn.apple.com/content/down...ltkjay8iyikkvlfo7ve50hcnv7756uxuw/iTunesX.pkg
II. Run these steps inside a terminal window after you installed the 5 Installer-packages:
1. Install Homebrew in case you don't have it installed already (otherwise update it by typing "brew update")
Code:
ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"
2. Install bspatch (included in the bsdiff package) using Homebrew
3. Download my binary-patchfile into your Downloads-folder
Code:
curl "https://dl.dropboxusercontent.com/u/158132/iTunes12patch" -o ~/Downloads/iTunes12patch
4. Change working-directory to the directory containing the iTunes-App binary
Code:
cd /Applications/iTunes.app/Contents/MacOS/
5. Patch the binary using the patchfile
Code:
bspatch ./iTunes ./iTunes ~/Downloads/iTunes12patch
III. Done
Now you should be able to run iTunes 12 Beta under Mavericks:
Image