Developer builds PhoneEar to play Mac audio through iPhone headphones

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A developer who wanted to watch a show on their MacBook late at night without waking others built PhoneEar, an open-source tool. It routes the Mac's sound to play through whatever headphones are plugged into or paired with an iPhone. No iPhone app is required, as the tool runs in Safari on the Mac. During development, audio sounded about 9% too fast because macOS reported a 48,000 Hz sample rate while the MacBook speakers actually run at 44,100 Hz. The project's code is publicly available on GitHub for others to try, fork, or suggest improvements.

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