Notice how by step 3, the time HotAudio’s player calls appendBuffer, the data has already been decrypted by their JavaScript code. It has to be. The browser’s built-in AAC or Opus decoder doesn’t know a damn thing about HotAudio’s proprietary encryption scheme. It only speaks standard codecs. The decryption must happen in JavaScript before the data is handed to the browser.
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I gave up entirely on finding the player by name. Instead of looking for window.as or window.AudioSource, I simply staked out the exit. I hooked the most generic, lowest-level method available: