I cleared all site data and closed the browser. When I signed back into Contour with Chrome, I still had a channel with no audio when SAP is OFF and and another channel with Spanish audio when SAP is OFF. Toggling SAP ON resulted in Englsh for both channels. It appears there are still some audio issue.
Until recently the channel with no audio with SAP OFF had English audio. That is an entirely new issue. The channel that now has Spanish audio with SAP OFF had no audio with SAP OFF before, but English with SAP ON. So, for that channel, no audio with SAP OFF was replaced with Spanish.