We discovered we had the same problem when we upgraded from XP to Win 7 - 64. We lost access to a number of stations, including our favorite SWISS POP.
I spoke with a number of B&O sales and technicians, all with no solution. I also contacted a few of the radio stations directly, with the same result.
Our solution is to just use the PC directly and listen to the radio as a favorite. This of course means that there is no usage, or need of the BEOPLAYER N.RADIO feature.
Not a very satisfactory answer of course, but one hopes for a better solution to come from B&O. Perhaps with Beonet.