Ah, thanks! It even looks like Pure Data is already embedded (says it's linux-only for now). According to Pd's homepage it looks like you can even use "externals, i.e. objects developed in another programming language" as part of your workflow.
The developer says: "Pd should be included in both windows and osx as soon as I convert Radium to use the new multi-dsp system in Pd that Miller made last year."