I cant really help you with your specific problem but I can tell you that dualmon is a function that is hard to get to work right. I use it to make the musicvideos play(the music and not the video) while Im on the mainmenu. Its good for that so that you dont get disturbed while driving. I have tried different versions of the rr.exe and with different success. It seems like this function isnt supported or updated by the programmers of RR which is a shame. I guess mp3 will be replaced by musicvideos in the future and I hope this function will have better support.