diglet found and mentioned this. I'm not sure who's behind it, but there is good content here already, although much more needs to be said/included. It's a wiki, so it if you have time, chip in!
BTW perhaps we should get some students, who are learning about digitization, the assignment to add in information?
Addendum (4:40 p.m.) -- Looking at the wiki, you'll see that the person stated in out of a need "to put together a paper on digitizing audio and video for my library...." So, yes, it leans more in that direction at the moment (as a commenter noted). But it is a start that we can add to!
I'm teaching a class in digitization in the spring and can see getting students to spend some time adding to it.