Case for a generic mp3 decoder board that can be found on ebay for < $2. Board goes in USB side first without the microSD card in.

Need to do:

1. Create lid that includes push buttons.

Fit is very tight, in fact, I used a woodfill filament(notice the sanding marks) for testing which has some give to it. You may need to sand/scale just a little for that perfect fit.

I have the back cutout because I power it through a couple header pins soldered to the battery terminals(See photo). Eventually I'll cutout the microUSB port and post it.

I'm using this to replace the 'radio' that came with the Powerwheels Frozen Jeep that only plays a few songs. Now it'll play how ever many you can load onto the microSD card!