Off the Siren Song, I do have copies of Zombie, Mary Murderer and Abduction.
Since Zombie includes work by MissMako, I'll have to get her permission before releasing it, but I can provide links to the other two.
I have been toying with the idea, however, of trying to resurrect The Siren Song (the website version rather than the Second Life version--which I guess would be a VR Chat version nowadays?), but I only have access to my videos, so we'd need to do some reconstruction of the other videos.
I think it'd be neat to bring it back, but I don't know if it's possible or feasible. With so much on my plate, however, I don't want to be the one to administer it. Sorry.