Just wondering if there is any way to play any of the Leisure Suit Larry games with MT32 sound on the Mac?

I know that they run via SCUMMVM after having a look at the package contents. And I know the SCUMMVM supports MT32 emulation.

Is there anyway to edit the config so it uses MT32 for sound and soundblaster for speech on LSL6?

I can extract out the game files and import into Boxer for MT32 sound but for some reason I then lose the speech. Also I don't really want to have to extract them out. I would rather use the application loader GOG provides.

I know I can fiddle with the config easier on the PC but I want to play them on my Macbook.

Cheers

James