Hello Philip,
I have updated the git and package prefix as part of my preparation for Non-GNU ELPA and MELPA. Unless someone has a good objection in the near future, moc is the new prefix. There has been a short time for discussion, but my search indicates it's not a common substring except for completing with "mock".
The current package lint shows no issues and the compile is clean. I have added a NEWS.org and moc.texi. The overall scheme is similar to what I used in dslide.
I have marked code I still consider unreliably unstable / experimental with 🚧 to note areas that should be ransacked by vandals at the first convenience.
I'm currently working on adding some kind of anti-highlight to completely obscure a bit of text and some trimming to try and stabilize the playback API for use in dslide.