>It seems completely worthless.
It is. A while back it was able to find a few streams, but it hasn't been updated for years and is not likely to find the streams you are most likely listening to. You are better off with Wireshark but it takes some experience to learn how to detect streams.
>You can do most everything you need by just browsing to the Roku's IP address.
Not sure what you mean. How can you analyze a stream by browsing the IP address of the Soundbridge?