I don't think it's the sounds causing the out of memory error. It may have contributed, but only due to another possible issue. KYKM ATC looks a little concerning to me. It looks like it was stuck in some kind of loop, which may have been chewing up memory, and the sound engine was the final trigger in the out of memory.
But the thing that has me really worried is this chunk of plugins!!
What I think you should try is completely REMOVE xjet (not disable, but get it right away from your X-Plane folder), and then try again.