This player will only show up when you install HQPlayer NAA manually. Go to Signalyst's website to download a copy of NAA. You can either install this manually from the shell, or via the Snakeoil tab.
Make sure you download the binary that matches your architecture (e.g. Download the i386 deb file if you are using 32 bit of Snakeoil OS), and also, the deb package for Trusty.
This forum thread (link) is a step by step guide on how to download and install the software. Please post in that thread if you have any issues.