I have both 30K models - SP46 and SP113. Sena removed the FM radio option on the SP113 and it appears that they disabled the audio input jack also. I have the special Sena cable that you must use and it works fine with all of my SP46 models. But when I put a SP113 on the same base I hear none of the music from my MP3 player. The SP113 already has the latest firmware and I have already done a factory reset. I know it is not the cable or the base as it works fine with a SP46 using the same cable and base. Is there a setting that I am missing?