http://imgur.com/MKvA4uD.jpg I tried to solder the sound circuit. I did exactly like this diagram but I only have sound from the headphones not the speaker. Do I have to do something special for the speaker to work as default ? Thanks. if using this diagram exactly (which does look about right).......

So I'm at the point to say f the audio circuit. The circuits here only cover a one speaker none usb dac. So now I've moved back to the power circuit. How are you charging the batteries in parallel? I did not see a switch in parts used. How did you do the charge circuit? I have the usb board connect...