Apple TV 4K sound goes out when switching to Disney

Hello jkburnscpa,

Thank you for reaching out to Apple Support Communities, and we'll be happy to help in any way we can. We understand you're having issues with sound cutting out when switching to Disney on your Apple TV and sound bar. To start, here is the Apple TV User GUide in case it is helpful: Apple TV User Guide

Also, try the steps listed here to see if changing the settings for your audio resolve the issue: Adjust video and audio settings on Apple TV

"You can adjust other audio settings, such as sound effects and music, audio format, and more.

1. Open Settings  on Apple TV.
2. Go to Video and Audio.
3. Change any of the following:

• Audio output (Apple TV 4K): If you connect one or two HomePod speakers to Apple TV for home theater surround sound, all audio, including navigation clicks, is routed to the HomePod speaker(s). You can change this setting to other available speaker options. See Use Apple TV to play audio throughout your home.
• Audio output (Apple TV HD): You can choose to play audio through your TV speakers or AirPods, Bluetooth headphones, or another AirPlay speaker. See Use Apple TV to play audio throughout your home.
• Audio format: By default, Apple TV uses the best audio format available. You can change the audio format if you’re experiencing problems with playback. Select Audio Format, then select Change Format and choose either Dolby Atmos, Dolby Digital 5.1, or Stereo.
• Navigation clicks: Select Navigation Clicks to turn them on or off.
• Sound effects and music: Select Sound Effects and Music to turn them on or off.
• Audio mode: Apple TV can automatically switch the audio mode for the best audio output. If your TV requires 16-bit audio, select Audio Mode to change from Auto to 16-bit."

We hope this helps.

Cheers!