I have my hdmi hp screen in my semi as a tv, why won't it play sound when I try to plug in speakers or head phones into it, so

[Shaw204]

I have a spare HDMI HP monitor I have put in my peterbilt, plugged into my blu ray dvd, why won't it give my speakers audio when I plug them in, the audio keeps playing on the monitor, I have no idea what to do please help! My E-mail is <removed>

 

[Someone Somewhere]

You may need to go into the menu of the BD player. There should be a sound area; try selecting however you connected your external speakers as the output.