I have never been able to figure out File Types for Dopus Magellan II. Or any Dopus for that matter.
What I am aiming for is the ability to play WAV files, preferably 16-bit and below, just by double clicking.
Like wise I'd like to be able to do this for various audio, video, and image files as well.
What is the key?
I see there are many AREXX Scripts out there for DOpus, but I've never been able to comprehend how that works either, let alone how to tie it into Dopus, OctaMED S.S. and the like.
Normally WAV is already supported by DOPUS II. Check for the wav filetype, hit Right Amiga / 5 and scroll down. Now you should see a filetype called 'WAVE, Soundsample'. Normally wavs are supported by using 'Command play', which is internally, instead having to use arexx and play16.
If not, you should add it

Let me know.