I wrote to them today with that very question as I was after both a Mac and Linux PPC build. Will let you all know if he doesn't reply on the list himself!

On Tue, Sep 27, 2011 at 7:14 PM, Louigi Verona <louigi.verona@gmail.com> wrote:
Guys, chiming in here, what about discoDSP Highlife? Is it available as free software? I looked at the so file, but I don't know if it is an actual source of the plugin?

Louigi.