I did a search and didn't see anything on this. Downloaded and installed the app a couple nights ago. Some observations. #1 - App was NOT presented on the marketplace. App is only available by going to their website, finding the link, and requesting an email be sent with a download embedded. You have to download the package and then open it. To do this, you have to uncheck a setting to allow programs outside the marketplace to be installed. Why in the world would they have done it this way? #2 - I get sometimes spotting signal when on 3G, even with full bars. Sometimes the music will stop and need to buffer, but you are missing the song meanwhile obviously. WiFi it works pretty perfectly so far. #3 - I have SIRRUS in my cars and truthfully will have limited use for this, especially since you have to buy ANOTHER plan for the DROID even if you have 3 (THREE) other plans. However, the app lets you browse the channels while listening to the current one and it will display what is playing on the other channels. That is pretty nice.