God, that music really is effective. Aesthetically, it's good, maybe could have some slightly dramatic effects on the whole execution bit, but the mood is clear and effective. I'll be pondering what I think HCF means for a while, I think.
(I replied to your question on my page, but I'll just copy and paste it here for convenience's sake:
And about the audio. I simply did as you tried: zipped up the audio with the html file and it all worked. I have encountered some audio lag problems with twine in other cases, so perhaps the audio was simply delayed it starting? Sorry I can't be of more help.)