A video has been posted by the creators of the interactive musical installation in the washrooms. Check out the video and grab the open source Roomware server if you want to do something like this yourself.
The video
Following are a bunch of links from the Dutch blog, Dutch Cowboys. They did a series of interviews at the event.
FITC general
http://www.dutchcowboys.nl/events/13020
http://www.dutchcowboys.nl/videochannel/video/524
Interview with Dave Girolami from FITC
http://www.dutchcowboys.nl/videochannel/events/527
Interview with agency Adobe booth: Achtung!
http://www.dutchcowboys.nl/events/13016
Interview with agency Adobe booth: Euro RSCG
http://www.dutchcowboys.nl/events/13005
Interview with agency Adobe booth: Qi
http://www.dutchcowboys.nl/events/12999
Interview with agency Adobe booth: Lost Boys
http://www.dutchcowboys.nl/events/12994
PICTURES
http://www.flickr.com/photos/18961396@N00/tags/amsterdam/
http://www.flickr.com/photos/mdvisser/tags/fitc/
http://www.flickr.com/photos/marcthiele/
http://www.flickr.com/photos/brianannerl/
http://www.flickr.com/photos/powerflasher/
http://www.flickr.com/photos/niquimerret/
http://www.flickr.com/photos/redhotbeani/tags/fitc/
http://www.flickr.com/photos/dns_roots/
http://www.flickr.com/photos/f-l-e-x/tags/fitc/
