In order to take advantage of all of the functionality of the CM Storm QuickFire TK on Mac, you'll need to download and install Karabiner (free) and drop in a custom private.xml file.
You'll want to keep any mappings specific to your TK inside of the specific item
tags or else they'll interfere with other input devices (eg. MacBook keyboard).
The QuickFire Rapid config includes media key assignments and command
/option
key swaps to behave more like a Mac. The QuickFire TK config enables correct NUMLK
functionality, as well as the command
/option
key swaps. I didn't have any issues with the TK media keys out of the box, but the Rapid media key mappings should be interchangeable.