Ah I see - I think you need to double the sound volume here, because the music tends to drown out the initial car sound effect.
That's a good idea. I'll try a volume boost on the sample itself, and if that distorts it, I'll just fiddle with the default volume settings so that it's more audible by default. Perhaps up the sound effects volume a bit and lower the music volume a bit.
or fade the music? Fades can work quite nicely.
Fade the music down while the car sound plays and then fade it back up again? That's a neat solution. I'll look into that.
Maybe make the GUI panel a roof tile texture to make it consistent with the scene?
I tried quite a variety of textures and couldn't get anything else which looked good. I do agree that it's currently inconsistent, and I would like it to match a little better, but I can't find anything that I like the look of really. Will have another go before it goes final though. Worked ok on Win98, I take it? No video or audio problems?