Looks to me like $169 at JRR is the wrong price. Audiodeluxe also has Custom at $149, when logged in you get it for $127. Thomann has it for $137 with no additional discount. I don't see any product difference between custom and beat producer except for beat producer selects the items for you.
Not having that keyboard myself that is tough to say, but USB MIDI may very well be referring to the Casio Privia. In your response to 57Gregy you said nothing is showing up in audio devices and that would be an issue. What audio device are you using? In other words, do you have a separate external audio interface connected to a USB or Firewire port on your PC or are you using the internal audio chip of the PC? As a basic test, can you import an audio file into a new Cakewalk project (Use File-->Import-->Audio or just drag the file into the project), hit play and hear it?
Got my serial number about an hour ago :) - order emails were in my inbox but the email with the serial number was in spam folder. Code still works at MF...