Did you ever get any further on the development of the Plugin for Radioshark?
I have a Radioshark1 that I have placed in my dash. Ground wire from antenna to J9 and FM lead to car antenna. The reception works fairly well, better than the stock radio in my car. I just need to figure out how to embed it in Centrafuse3. I tried the alpha version of your plugin and I cant change channels with it.