Two Great Streams are from: KTCL 93.3 Fort Collins, Colorado
The Other is: KROQ 106.7 LA, California
I found the easist way to get these streams on the Sound Bridge is to use the "SEARCH" function with the remote, then select "NAME", and then select the station call letters as desired, then select "OK", then select the result of your choice.
Note: KROQ has a second result choice for 80s Alternative Rock (HD2)
Note: I have not had any luck with the Roku Radio Snooper in obtaining a usable URL.