6 Channels, E-AC-3 doesn't open properly on my audio editor

[pooksahib]

Hi. To make it easier for my Dad to watch a favourite TV show, I download it and then open it with WavePad in order to amplify the volume. The most recent episodes, however, behave oddly: a one hour show appears to be anything up to 3 hours when in WavePad and the playback is a muffled mess. The audio is as per the heading but I can't recall what it was when I was having no problems.
Any idea what the issue is and how to get round it? Many thanks.

[ProWo]

Hi. To make it easier for my Dad to watch a favourite TV show, I download it and then open it with WavePad in order to amplify the volume.

Use clever FFmpeg-GUI instead and convert 6 Channels, E-AC-3 to AC3 stereo, increasing speech volume.

See how to do:

[Attachment 91635 - Click to enlarge]

For the 1st try, use clevernorm 4 instead of 5.

[pooksahib]

That looks just the thing! Thanks a lot, ProWo.