I use one of the Grace Digital radios. I think C Crane sells one now. I found mine on Amazon. I have no idea what OS it uses. The apps are built in. The Sirius app is easy to set up. For Dark Matter, I found the url for the darkmatter stream, then went online to the Grace Digital site, went to "My Streams" and put in the url. It's all in the manual. It also comes with various apps to get radio stations around the world. Out of the debacle of Dark Matter, and the money I spent, I've been happy with the Grace Digital.