BT401 audio out

Hello forum,

Im having a hard time getting audio out of the BT401 when using as a BT receiver.   I am trying to stream music from my laptop to the BT401 and playback using the onboard DAC out.   I tried code on the Arduino to set the playback to Bluetooth audio, but I get nothing out of the BT401.   I have tried connecting the speaker directly as well to the DAC out (it is supposed to have an amplifier onboard), but no audio.   Am I missing something simple here?   Do I need to also provide 3v3 or something else to get audio out?   
 

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#include <DFRobot_BT401.h>
#include <SoftwareSerial.h>

SoftwareSerial btSerial(2, 3);  //RX TX

DFRobot_BT401 bt;

void setup(){
 btSerial.begin(9600);
 /*Delay 2s for the BT401 to start*/
 delay(2000);
 while(!bt.begin(btSerial)){
   Serial.println("Init failed, please check wire connection!");
   delay(1000);
 }
 bt.setVOl(80);
 bt.switchFunction(bt.eBluetooth);

}

void loop(){

}

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