I found the problem of the 11th iso: I tried to build the iso in a large Windows partition, and the AmigaOS 3.1 failed to recognize free space.
So, I made a little partition (less than 4GB) and build the iso there.
The 11th iso revised and corrected is here (offline).
Go to Downloads section to download the fixed one.
Now the 11th episode is 12fps 24KHz audio, the oav is 10fps 20KHz.
Happy new year (and happy new release) !!!