I've finally got Mac OS X Snow Leopard. And I've managed to install Replay Media Catcher using WineBottler. Darwine is too old. But it is pretty easy to install WineBottler. Wine is also pretty easy to install and I can guide you if you need any help on that.

See the following thread for more:
How to install and run Replay Media Catcher in Mac OS X (Snow Leopard)