I have a custom arcade cabinet using a raspberry pi with pi play. It's a pi 2. The screen is VGA (for which I'm using an hdmi adaptor), and sound is via the audio jack to speakers. Since a recent update the sound no longer works.

I've gone through all of the usual options (raspi-config to force audio to the jack etc). If I run speaker-test from the command line, the sound works through the speakers as expected. but pi-play when I start it up still tries to output sound to the hdmi (I've tested this by plugging the pi into my normal tv which has hdmi with audio. I can clearly hear the sound through the tv in pi-play, but at the command prompt using speaker-test, the sound is coming out through the headphones I plugged in. It's like pi play is ignoring the settings and forcing to the hdmi port).

I've tried using the sudo amixer cset numid=3 1 too but no effect.

Does anyone else have a similar set up and are getting a similar problem? I don't know if it was updating pi play that was the problem, or updating the firmware, or updating raspian to be honest, I tend to update all of them when I'm updating anything. Any help appreciated, games just aren't as fun when they're in silent mode!