Where does in the code...

[Kaysakado]

...does it make O_ have a higher priority than D_? I tried, like, 50 kajillion searches: O_, "O_, Priorit, etc...

 

[glaber]

Are you putting in music? O is for the mp3s and module files, D is for midis.

 

[Oogaland]

I haven't examined matters in detail, but this looks to be it. From s_sound.c:

if (!S_DigMusic(music, looping) && !S_MIDIMusic(music, looping) && (!nofmod || !nomusic || !digital_disabled || !music_disabled))

It's line 1039 in r2417.

If you can't see how this works, you might like to take a look at Wikipedia's article on short-circuit evaluation.

 

[Kaysakado]

So if i wanted to give MIDIs higher priority, I would change it to this:

if (!S_MIDIMusic(music, looping) && !S_DigMusic(music, looping) && (!nofmod || !nomusic || !digital_disabled || !music_disabled))

EDIT: It worked!