Regarding the issue of sound I have not progressed much. I have endless problems with the PCM buffers by loading the SDK does not have anything to upload from memory (only available from LoadPCM file) and it seems that only supports one format PCM will have to be lower level and pull through the implementation based on jz4740.cy i2s_jz4740.c.

In this new release and you can play some games at full screen with controls and properly configured:
A -> A CONTROL
B -> B CONTROL
START -> START
POWER -> EXIT

To install the console download the file and copy it into the sim card memory of the A320 in the Dingoo. \ GAME

Create the folder. \ GAME \ WSC

In this copy the roms you want to play with. Ws  (.WSC --> .WS)

Click on the rom and test this first approximation

Also you have the sources here will continue to work to improve this emulator.

ROMS: http://emuwsc.ru/