# Bugs

## iTunes music showing on mic meter
Playing music via iTunes causes the mic meter to show audio levels. The WASAPI
mic capture (`DataFlow.Capture`) and loopback capture (`DataFlow.Loopback`) are
separate devices. If iTunes audio appears on the mic meter, it is likely acoustic
coupling — the mic picking up speaker/headphone output. Verify by muting the mic;
if the meter still shows levels, check Windows Sound settings for stereo mix or
"listen to this device" routing.