[quote="tulamide":3pit4ze5]For a looped car engine sound have a look at Verve!
. It also uses XAudio2 a lot (including fades)
The click problem is a combination of the kind of your sound, Construct's builtin limiter and the poor quality of the D/As of standard soundcards. With a limiter all sound output is flattened towards maximum loudness. If there are sharp (and very low) frequencies in a sound, it will produce such clicks and the limiter makes them sound even louder. The best you can do is to use loud low frequencies as little as possible and to adjust the channels volume until the clicks disappear (just reducing the volume without changing the spectrum of frequencies may not suffice)
For the fading you may have a look at Verve! again, but I also made a quick cap
using "engIdle.wav" from Verve!, showing how to fade in with key press and fade out on release.[/quote:3pit4ze5]
Thank you so much. That is very helpful. I now, at least, have some idea of what to shoot for when making sounds. I'm going to study the small cap you made.
Plus that "Verve!" project is a treasure trove! Thanks so much for making it and commenting it like that... A big help for beginners like me.