A common problem in games on all platforms is competing audio tracks. Two sounds are activated simultaneously, and the result is either noise (garbled playback) or a sudden and annoying leap in volume.
I have no idea why the latter occurs, but it just happened for the Nth time as I was playing Civ: Revolution. In this case, construction of two wonders completed the same turn, so the sound for completing a wonder played at a volume far beyond normal.
In the case of a duplicated sound like this, the solution is simple: code the game so that only one copy of any (or particular) sound can play at any given time. I would think that'd be simple to code, but I suppose I could be wrong.
In the case of separate audio files competing for the same space, all I can say is that it's a potential problem that needs to be accounted for during production.