If anyone is interested in open source semantic temporal audio/video
metadata in mediaWiki take a look at the metavidWiki extension. I just
posted a screen cast ... still a few weeks away from public launch but
you can check out the preview now:
http://metavid.ucsc.edu/blog/2007/12/18/short-metavidwiki-extension-screenc…
if your *really* interested come by #metavid on freenode (like most
projects) we could use more testers / whatever level you interested in
getting engaged at ;)
peace,
michael