Working! FM synthesis, mic input, Tuna effects: http://forresto.github.com/dataflow-webaudio/
Most retweeted for #musichackday! Thanks!
12:30 final update:
JQueryUI number scrubbers for float and int inputs. Worksish.
Designing and implementing Web Audio API nodes for Dataflow HTML5 node-based visual editor.
The wiring editor is a refactoring of http://meemoo.org/ project, and we'll be able to wire together visual effects to audio triggers (ala Quartz Composer).