Ah, it was my bad, sorry! I use a script-and-other-stuff blocker, and apparently this engine loads the music tracks as "media" which is blocked by default. Didn't have this before. Well, I liked the intro and outro music - the main track has some spikes that are uncomfortable to my ears (they're quite sensitive), so that one won't go onto my favourite list.
I realised you can actually win the game while watching your postmortem - missed the parts with the door and the presents in the description. The outro text is a nice twist! I like it if seemingly happy go lucky themes turn dark, and this one really fits the game's theme. Guess there will be an army of snowmen with nuclear winter coming and all. ;)