It's really easy to perform a conversion of what you describe, for the sake of publishing an archive.
Extracting audio from flash objects is trivial, and coverting HTML frames to a single page format is a basic markup task, using divs.
This stuff is so easy, you could not only automate it, but build an abstraction layer to convert it on demand or even client-side, with a JS library.
Anyway, as the GP implies, the archive was likely performed collaboratively, with the consent and direct assistance of YTMND. Why else would they have closed user registration, but left the site available for a full year.
Extracting audio from flash objects is trivial, and coverting HTML frames to a single page format is a basic markup task, using divs.
This stuff is so easy, you could not only automate it, but build an abstraction layer to convert it on demand or even client-side, with a JS library.
Anyway, as the GP implies, the archive was likely performed collaboratively, with the consent and direct assistance of YTMND. Why else would they have closed user registration, but left the site available for a full year.
The writing was on the wall.