There was a small bug inside the A2DP KeepAlive feature introduced with the 18.104.22.168 release which had not so small side-effects, resulting in the AudioTrack pool getting exhausted quite early-on after boot.
This caused several applications to stop outputting audio and was an oversight on my end for which I am truly sorry.
Something this critical should have never slipped through the cracks to begin with and I'm surprised this issue succeeded in dodging me on my own unit for such a long time.
I am doing my best to finish up with everything behind the curtain. The site is almost done as far as functionality. I will probably work on theming it a bit more to fix formatting and just the overall feel for it. Once completed then I can maybe go back to making guides and tutorial videos to start populating it. My hope is that once the site is up and running, everyone will contribute as far as tutorials, recommendations, configuration shares, and just anything related to the GPD line of devices.