Hm, I'm back, but I can't figure it out how to use it yet shocked

Code:
var vSoundhandle;
var vVolume;
var vFreq;
vSoundhandle = snd_loop(sndEngine, 100, 0);
while(vEngineRunning)
{
vVolume = vCarSpeed*vVolumeFactor;
vFreq = vCarSpeed*vFreqFactor;
snd_tune(vSoundhandle, vVolume, vFreq, 0);
wait(1);
}


Where to place this and what to code should I use for letting it know which mp3 should be looped at what speed of rotation etc?

Thanks^

A7 7.77