If you are meaning to stop the music at it's end, before it starts it's next loop?
Yes
If you are meaning to stop it half way through it's loop?
I would lean on, No, unless there is someone out there that knows a way to do this.
To stop a looping wav file, you first have to start it with a condition that can be reversed.
For example,,,, if it starts by bringing a unit to a certain location, you can stop it by removing that unit, and restart it by returning that unit to that location.
Or, turn it around, if player brings 0 ?unit to a location, Play wave.
If this location is where the other wav is needed, the music stops, leaving room for the other wav file.
When that unit leaves the area, the music returns, like a dramatic pause in the action.
There would also be other conditions that could also be used.
Score (by keeping track of custom score)
Accumulate (by keeping track of ore, or gas, to regulate the wav file)
Set Switch (Alternating between set, clear, or toggle)
It would all depend on your preferences, and the maps flexibility.
Repost if one of these is usable, but you're still not sure how to use it.