SuperTuxKart

1) Offer sound and volume sliders in options
2) volume is inconsistent, some musics are too quiet, others too loud. One
solution is to remix the music files, but this is hard since not all
artists would respond to us (we took some tracks from music websites,
without ever speaking to their author, making it even harder). My proposed
solution :
"Actually, people often think about turning the volume up. I say, we can
just turn down the voume of everything that's too loud, then people can
turn the volume of their computer up, it's quite easy :) "