Well I got it connected now. After setup tells me it couldn't connect, all I had to do was "retry" and it worked the second time.
The problem now is that the remote is totally unresponsive. During setup I selected the Motorola VIP 1216, but only a few buttons on the remote worked during the test. I thought I could tweek that later. Now none work at all and I can't find where to get to remote settings.
The application that you found uses the default IP address for the Slingbox (XXX.XXX.XXX.254). However, most of the times the router will provide a different IP address.
This means that you need to access the router interface in order to get the IP address provided by the router for the Slingbox.
The following third-party link will provide you with some information and steps to follow.
Then, make sure to select the specific make and model for your TV source in order to get the right remote control. This link will allow you to verify if your TV source is a supported model.
Finally, if the remote control does not work, make sure to check the following links in order to check if the IR Blasters are working properly or not.