The current site uses software from Legato Media
for the interactive music player. This player is Flash-based. I think part of the biggest reason for the stall of this project is that Legato does not have an HTML5 version of its player so that it will work on iOS and other mobile devices, and no suitable alternative to Legato's offerings has been identified.
This means that if Legato can't or won't provide a non-Flash version of their player, then most likely it would need to be developed from scratch by someone else (and without infringing on Legato's intellectual property).
Any volunteers willing to take this on?