I am using M3-64, non free and tainted enabled
After rendering the project, using the preview function, video is correct but there is only a buzz from the speakers using Xine. If the project is converted to an ISO and played using VLC, video is correct but again only the buzz.
The original material is *.mp4 from Kdenlive and plays correctly with Xine and VLC.
If the project is performed in M2-64 or 32 using the same source material, there are no problems.
TIA
Benmc