I have just been out to the car to connect a USB stick to the rear of my 4100 and the small plastic piece inside the USB socket has snapped off leaving the small metal connectors visible. Now NOTHING will connect using the USB. I have had the unit over a year so the warranty is out. I was thinking of maybe getting the CD-BT200 module to get around the problem but does the module allow the playing of music through the 4100 via bluetooth? Thanks

Go onto the pioneer website under the support section, and they'll show you where the Certified repair shops are. Take it to them and see how much it would be to fix. Sound quality is decent, but not the best through bluetooth.