Bug - sound goes mute periodically / requires quit & reload

[Airpower]

At points during gameplay (I can't discern a clear pattern yet), the gameplay sound (music and effects both) will mute out entirely.  No in-game actions cause the sound to come back.  I have to save the game, then Alt-F4, then re-launch the game.

I'm not sure if you're running Particle Fleet in the same engine as CW3, but this same bug also happened to me in CW3 as well.

This is a guess on my part, but I think this may be tied to either too many sound channels being used at once, or when a "loud" sound occurs in-game.  It always seems to immediately follow an explosion of some type.