Just some quick notes:
  1. I got a patch into FITS to add some basic video metadata extraction. I'd like to take it further to ensure support for the formats that exiftool supports, but it's a good start.
  2. Today I pushed out a first release of ave-sync, a media/xml synchronization tool. Also a good start, and should be a starting place to play with the w3c FileAPI in Firefox 3.6.
  3. XForms applications are painful to write, but probably a good choice for XML-based workflows.. more on that later..