A system for synchronizing audio-video playback, comprising: an electronic device ; and a primary audio device configured to: wirelessly receive, from the electronic device , a first portion of audio data for playback with the primary audio device , and a second portion of audio data for playback with a second audio device ; wirelessly transmit the second portion of audio data to the second audio device ; wirelessly receive an acknowledgment signal from the second audio device , the acknowledgment signal acknowledges receipt of the second portion of audio data at the second audio device ; determine an audio delay time based on receipt of the acknowledgment signal; determine a change in audio delay time between the audio delay time and a previous audio delay time; compare the change in audio delay time to a threshold; and wirelessly transmit the audio delay time to the electronic device based on a determination that the absolute value of the change in audio delay time is greater than the threshold, the audio delay time accounts for a latency caused by wirelessly transmitting the second portion of audio data from the primary audio device to the second audio device ; wherein the electronic device is configured to delay a video playback based on the audio delay time. an electronic device ; and a primary audio device configured to: wirelessly receive, from the electronic device , a first portion of audio data for playback with the primary audio device , and a second portion of audio data for playback with a second audio device ; wirelessly transmit the second portion of audio data to the second audio device ; wirelessly receive an acknowledgment signal from the second audio device , the acknowledgment signal acknowledges receipt of the second portion of audio data at the second audio device ; determine an audio delay time based on receipt of the acknowledgment signal; determine a change in audio delay time between the audio delay time and a previous audio delay time; compare the change in audio delay time to a threshold; and wirelessly transmit the audio delay time to the electronic device based on a determination that the absolute value of the change in audio delay time is greater than the threshold, the audio delay time accounts for a latency caused by wirelessly transmitting the second portion of audio data from the primary audio device to the second audio device ; wirelessly receive, from the electronic device , a first portion of audio data for playback with the primary audio device , and a second portion of audio data for playback with a second audio device ; wirelessly transmit the second portion of audio data to the second audio device ; wirelessly receive an acknowledgment signal from the second audio device , the acknowledgment signal acknowledges receipt of the second portion of audio data at the second audio device ; determine an audio delay time based on receipt of the acknowledgment signal; determine a change in audio delay time between the audio delay time and a previous audio delay time; compare the change in audio delay time to a threshold; and wirelessly transmit the audio delay time to the electronic device based on a determination that the absolute value of the change in audio delay time is greater than the threshold, the audio delay time accounts for a latency caused by wirelessly transmitting the second portion of audio data from the primary audio device to the second audio device ; wherein the electronic device is configured to delay a video playback based on the audio delay time. <EOS>