Directing audio output to Soundflower in particular apps without built-in capability?

I know I can set the whole of my system audio output to Soundflower, but I require the ability to output sound just from a given application through SF.

Apps like GarageBand can do it normally because they have built-in options to do so, but of course that isn't always the case for every app.

I was thinking something like this:
http://tg.tmiz.net/softwares/clwea/

...except instead of Chrome, I'd rather use Safari or Firefox. Should I ask the developer to make another version where I can select a different application, or is there another way to do what I want?

Parallels can accomplish what I need, but it's a pain to start it up and have it consume so much RAM for a simple task.

 

For further reference, WireTap Anywhere does exactly what I want... except with a $130 price tag.