After replacing the fuse for the lighter yesterday I didn't do anything else, I stopped for the day. This morning I get in the car to go to work and find out I have no sound coming from my speakers. All of the media options are functioning and working. I can see the timer on CD's when they are playing. I can see the timer on my phone when I'm playing Pandora and the radio is tuned to a station I know active. How could changing out a fuse for the front lighter have caused this issue. Where can I start to trouble-shoot? I double checked the mute button to make sure I had now somehow accidently pressed it, still nothing.