Sony DSX-M80 installed in boat 2 mos ago. Unit still recognizes my stored phone on Bluetooth (BT) but no longer will play MUSIC through BT. However, phone calls work perfectly fine. 1st time phone pairings for visitors work perfectly. I "forgot" the Sony on my phone and re-paired, but same issue. Turning phone and Sony on and off didn't help, and oddly neither did pushing the reset button behind the faceplate. Same thing happened with my son's phone, and our phones connect to other BT devices just fine. I wanted to try forgetting my phone on the Sony, but that's not an option surprisingly. Again, newcomers' phones pair perfectly. Anyone dealt with this before? Sony chat tech just said it's under warranty and I can replace, but it doesn't feel like a mechanical defect and I don't want to lose two weeks getting a replacement if anyone here has a fix. Thanks.