What does "Synaesmedia" really mean?

A Portmanteau word made from Synaesthesia and "Media".

More tightly bound, more intertwingled than mere "multimedia". A single thing that encompasses the dimensions of sound and colour and movement. Like, say, Gbloink! :-)

But now there's Master Foo to tell us about the true way of mashups.

Which is, incidently, the best defintion of Synaesmedia I never wrote.