Audio recorded off television is notable in that 1. Everyone did it, domestic video was fairly late in the piece in Australia, and 2. No one's interested in it.
I've just done a round of talking to the various government authorities about audio; confirming they are not in the slightest bit interested, disbelieving that it's even a medium of recovery and as an afterthought asking if I have any missing episodes on tape.
If it's not high profile, then ONLY Kaleidoscope will take it, sadly.