My headphones don't show up in the Outputs list
Open System Settings → Bluetooth and confirm both pairs are connected (not just paired). MultiPods only lists devices macOS is currently exposing as audio outputs. The list refreshes live; if it doesn't, hit the refresh button in the popover header.
One device's slider is locked with an "Adjust volume on the device" pill
CoreAudio is reporting that device's volume property as not settable, so MultiPods shows the pill instead of a slider that pretends to work. This is uncommon — most Bluetooth headphones, AirPods included, accept volume changes from the Mac. When it does happen, adjust the volume on the device itself, in Control Center, or in the source app. Every other slider in the session is unaffected.
One pair is half a second behind the other
Open MultiPods → Settings → Advanced. Drag the per-device offset slider for the faster device (range is 0–150 ms) until lips line up with words, or hit Auto-sync supported devices to anchor on the slowest one automatically. AirPods and Beats refuse the offset at the CoreAudio layer — for those, the next item is your friend. Offsets reset when you quit MultiPods.
Headphones drifted way out of sync mid-session
When the gap is wider than software offsets can close, macOS has usually picked different Bluetooth codecs for each pair. The fix is a quick re-handshake: open System Settings → Bluetooth, toggle Bluetooth off, wait a second, toggle it back on, and reconnect each pair. MultiPods has the same guidance built in to the Advanced tab.
The Mac's volume keys stopped working
They pause for the duration of a session — there isn't a single output for them to act on. Stop the session and they snap back instantly. Use the per-device sliders in the meantime, or flip on Link volumes in the popover and any one slider will move them all.
Audio sounds worse than usual
macOS sometimes downgrades the codec from AAC to SBC when more than one Bluetooth output is active, to keep both streams in sync. There's no good fix at the OS layer; reducing the number of active outputs usually restores AAC.
The Mac went to sleep mid-movie and the audio dropped
By default MultiPods holds the Mac awake during a sharing session so Energy Saver doesn't drop the Bluetooth links. If yours slept anyway, check Settings → General → "Keep Mac awake while sharing" — it ships on, but it can be turned off. Display sleep is unaffected either way.
How do I uninstall it cleanly?
Quit MultiPods (the aggregate audio device tears down on quit; any leaked one is swept on next launch). Drag the app to Trash — that's enough for almost everyone. If you want a spotless slate, also delete the sandbox container at ~/Library/Containers/com.appgineering.MultiPods, which only holds a few kilobytes of preferences. There are no kexts, daemons, or helpers to chase.
MultiPods orchestrates Bluetooth audio devices we did not build, on a macOS we did not build, with codecs we did not pick. We do our best to surface every constraint honestly. We can't promise your specific pair of 2017 over-ears will behave identically to your partner's brand-new buds — physics and Apple's audio stack get a vote.