hammerpocket:
You'll be our first OS X tester and since it sounds like you've managed to run springboard I'd say it will likely just work! It shouldn't hurt anything to try. I do all my development on Linux which (at a filesystem / kernel) level, has a lot more in common with OS X than Windows. Your chances are good.
The easiest way to get your Roku IP address is by going to the settings page on your device. Also, once you put your Roku into developer mode it will tell you its IP address. Springboard won't be able to install the channel unless your Roku is in development mode.
