With the earbuds, you need an inline volume control as now the G9 is so loud you cannot get the volume low enough without a seperate control. She also sells the volume control which I plug into the G9. Then plug the earbuds into the volume control. Now I have no problems hearing phone or music. I play both MP3's from the phone and iHeart Radio from the internet with no problems.
I am now going to work on getting the Nav IV into the mix. I know that it does not have anywhere as nice mp3 player as the Samsung S3. So All I want from the GPS is voice instructions.
I'm also interested in getting a voice recorder tied in. I use the GoPro HD with remote. But I would like to be able to input voice into the video while I'm riding without always linking it directly to the video. It is a pain to seperate the video from the audio when mixing a movie. But the vox on my voice recorder keeps the recorder going all the time when a mic is placed in the helmet. I'm thinking I need a remote control for the voice recorder. But that is not what this thread is about.
Will let you all know how the Nav IV connection goes. If your interested in the earbuds conversion, drop me a line. It costs $48 for everything and she has fast turn around service.