I looked into the files you sent me, the gold edition has only MIDI music files... which don't work on Android atm... we'll be looking into that.
You probably see Adlib only because the game didn't find/recognize any music at all and defaulted to this option.
I'm attaching the adlib music catalog (adlib.cat)... please try if this works for you... just to confirm if Adlib option as such works or not.
don't worry about android midi support. it'll need timidity at least to make it sound plausible, but eats resources like hell. my tablet goes through it's charge like a wolf through a young rabbit while playing the current version.
the adlib.cat attachment is for xcom-eu, using it with tftd plays the intercept music at the menu, which is cool btw.
so, in short, adlib works perfectly.
edit: checked wth gm.cat and roland.cat, but i didn't find any option for roland, and gm didn't work.