Thanks Sergio - this actually solved my problem with FX losing audio also! Geez, I didn't even know alternate audio was an optionslimoli said:I have a feeling it's not the S3 but the cableco changing audio from AC3 to MPEG. Tune to one of those "no audio channels" and press info on the S3 remote. Check the audio symbol and see if it shows any 'alternate audio'. If it does, click on it and see if the audio comes back.