I'm so bummed everything is gone. I mean what was that person thinking really? Did they really think they could escape copyright? They are overly strict with that these days.
They should get in touch with an online fan community and offer to share all the stuff they have. That is what I would do anyway.

I just love that they managed to get such HD quality videos. A lot of the TV lives of Ayu on youtube aren't high quality. This was like watching a Blu-ray of live TV performances.
I have always wanted Avex to release a collection of TV performances but I understand why they cannot.