Basic Audio Driver Kotlin Wont Send or Receive Audio

[sawyermade]

Describe the bug
I just copied this file verbatim, HERE, and it just doesnt work at all then eventually freezes my phone and a popup saying its not responding, wait or close app. I receive no audio on the mobile device and on the other device I hear static chirps at a steady pace.

To Reproduce
Use this file and it doesnt work then crashes. HERE

Expected behavior
Capture and render the audio

Screenshots
No screenshots

Device (please compete the following information):

• sessionId, if applicable:
• Android SDK version: 35
• OS and version: Pixel 9, Android 15

Additional context
Not sure why it isnt working, having changed anything on it except adding logs but it doesnt seem to have anything wrong with it, no errors. App just freezes and asks if I want to wait or close the app.