Different length of songs in a Music Instrument container

I’m trying to make a War Thunder Music mod, but I have almost to no knowledge about FMod.
I have a Multi Instrument container that consists of two songs that play when the battle is won. The problem is that one is 45 seconds and the other one is 5+ minutes long. When the short one plays, it doesn’t loop for the next 5 minutes, because the container is as long as the longest song.

Is it possible to stop a container thingy playing music, when the audio file ends?

This is how it looks like, the short one plays for another 5 minutes.