1. A non-transitory computer readable medium storing instructions for detecting an audio channel configuration, which when executed by one or more processing units performs a method, the method comprising: receiving a multi-channel audio file; determining an audio signal level for each channel in the multi-channel audio file; identifying channels containing usable audio content, wherein the identifying includes a determination whether each channel comprises the audio signal level of at least a threshold signal level; and using the channels identified as containing usable audio content, determining a comparison score between each channel based on the usable audio content; identifying a pairing of channels based on the comparison score.