They’re back up (well, the wave files anyway), thanks to the Internet Archive.

High frequencies being tested in the urban badlands: see, no teenagers here!

A lot of people find this site through searching for something along the lines of ‘Mosquito high frequency anti-teenager ringtone’, and are presumably disappointed when they find that there is no such ringtone to download, even if just because they’d like to test it on friends and family. (More on the Mosquito device) There’s also the more possibility of course of using the ringtone as a kind of ‘secret ringtone’ that, supposedly, only younger people can hear, so you can receive text messages, etc, e.g. while in class, without adults noticing, though I’d have thought that was partially the point of the vibrate mode.

Anyway, I thought I might as well give those searching what they’re looking for, sort of.