Thanks to these forums, I got sound and speech to work for the DOS versions of Space Quest 4 and Laura Bow 2: Dagger of Amon Ra by replacing the Sierra default driver with the updated one.

However, there is one interesting thing I noticed that could perhaps be solved easily: sound and speech only work under DOS. If I try to run the Windows versions of these games, there is no speech, only sound.

It seems to me this is just a simple matter of configuring the Windows version to "understand" it should use the same configuration the DOS version uses, but I have no idea how could I do that.

I'm running the games on a Pentium III 733, 256mb of RAM, Windows 98 SE installed, Sound Blaster Live! - here is the .cfg files that work for the DOS version:

SQ4 and Laura Bow 2 cfg file:

videoDrv = VGA320.DRV
soundDrv = ADL.DRV
audioDrv = AUDBLAST.DRV
joyDrv = JOYSTICK.DRV
kbdDrv = IBMKBD.DRV
mouseDrv = STDMOUSE.DRV
memoryDrv = ARM.DRV
minHunk = 100k

And here are the sierra.ini files that (apparently) the Windows version uses:

[info]
title = Space Quest IV
sound1000 = true
bwcursor = true
genmidi = true
#patchpath =

[info]
title = Laura Bow 2
sound1000 = FALSE
cursorview = true
audiobuffs = 4
#patchpath =

I am under the impression that it should be very easy to tell the Windows version to use the same drivers specified in the DOS .cfg file, but I have no idea how.

Thanks in advance.