I realize that most people do not like Google's AI output when you do a search, but I was surprised to see mention of "Cinelerra" in the output when I did a lookup of "AudioOSS::open_output: No such file or directory". P.S. I made the Cinelerra below in Huge letters just so it would stand out.

AI Overview
This error usually means the application is trying to use legacy Open Sound System (OSS) drivers, or an audio device is missing or misconfigured. [1]
1. Update the Audio Driver/Output Plugin
Many applications default to OSS. If you are on a modern Linux distribution, you should switch your backend to PulseAudio or ALSA. [1, 2]
  • For command-line players like cmus: Open the application's configuration and update the output plugin:

  • :set output_plugin=pulse (or alsa)
  • For GUI programs (like Cinelerra): Look through the Preferences or Settings panel and change the "Audio Driver" to PulseAudio, ALSA, or PipeWire instead of OSS. [1, 2]