neoncube [KEEP] the official Memrise courses and leave the rest of the course still intact
This would be my preference.
I think it's only the Videos that are probably covered by this issue.
The alternative audio (speech) could be by MemRise staff or even audio available via the internet.
And if not, the audio perhaps could be uploaded by people keen to look after the speechless version.
Is it worth asking that set of questions?
PS
@[deleted] I tend to agree - sad.
To be honest, based on Mr. Ben's statement in the following post, I was concerned that his intention did not include the official courses.