FEB 2021 UPDATE: work has began on the pure-javascript sequel now
https://github.com/increpare/bfxr2

Bfxr
homepage : http://www.bfxr.net
github page : https://github.com/increpare/bfxr
license : http://www.apache.org/licenses/LICENSE-2.0.html

The AIR-specific code is here:
https://github.com/increpare/Bfxr-AIR

contact : analytic@gmail.com