I was watching the Roku channel as late as last week and the audio was fine. Recently, this past weekend, the audio became degraded. I'm receiving a background track but the dialogue track is not audible. This is occurring on any random selection on the channel. No idea what may have caused this issue but it has to be a change implemented on the Roku channel since my device settings have not been changed and I'm able to continue receiving audio on all other channels. I've connected my Roku device to my audio receiver which is connected to 2 speakers using just the left and right channels.