How about getting the Spotify mobile client for Windows Phone 7 out on the German Marketplace? I'm aware of that an agreement for streaming music in the German market still isn't in place, but there should no reason to keep the client away from customers shoping apps from the German Marketplace but living elsewhere in Europe.
The situation should be the same for the competition from WiMP, but the WiMP client is already available for Win Phone 7, also at the German Marketplace, so GET GOING!!
