This bug took a while to get to but I believe I solved it today. I ended up doing a pretty major rewrite of how the game handles sound. The crashes were due to too many sounds being played simultaneously. The fix for this bug will be in the next release. The release is feature-complete and I'm testing it now. I hope to push it live for PC by tomorrow evening. The Mac release may be delayed as I'm experiencing some significant perf issues on Mac.
Thanks again for reporting the issue and happy playing!