FUZE 8gb won't play thru a usb cable, goes into charge mode

I’m not sure what you mean by “Play through the USB Cable”

Inside that cable are four wires:

Two provide 5 volts, which will charge the Fuze but still allow it to play.

Two more are the USB Data lines, which will allow your PC to read and write data files.

While these are connected the Fuze appears as a storage device and does not play music.

There are no audio wires in the stock USB cable.

When I connect the fuze in my car I have only power connected, so it plays music fine, and charges its battery too.

Even when the Fuze is connected to the Sansa dock, you cannot play music if the USB cord is connected to

a computer. There ARE extra connections in the 30 pin dock connector for line out, as well as a headphone/line

selector and a few communications pins for the remote control, but the stock USB cable does not

touch those extra pins. So unless you have a Sansa dock, or perhaps one of the Altec-Lansing dock units,

you probably don’t have access to those.

I hope that helped.

LyleHaze