If you insert the HDMI cable, the audio would output from HDMI by default in android.
Would you please try to install "soundabout" APP to switch audio output from HDMI to analog?https://play.google.com/store/apps/deta ... x&hl=zh_TW
Copy and paste the link above to following website. Then you can download "soundabout" APK.http://apps.evozi.com/apk-downloader/
Install this apk to wandboard android.
Then execute this APP.
Set "Media audio" as "Speaker".
Then, audio should switch to analog output.