Beat Detection feature is missing.
I can't see any Beat Analyzer in Preference, so I can't choose one.
Win7 x64
Edit:
I think I found the problem.
The MixxxPortable folder was located in a path that contained Hebrew charaters.
I moved the MixxxPortable folder to the root folder (D:\) and everything work is working as expected.
It should work no matter where I place the MixxxPortable folder.