Auto move-on doesn't work with audio files

In my deck, I have cards that are text to speech, and cards that have an audio file play instead. The auto move-on function allows me to move through text to speech cards without clicking anything on the screen, but when it reaches an audio file card, it’ll play the audio file and then not move on automatically - I have to click one of the feedback buttons to move on.

Overall, the goal is for me to use anki as a semi-interactive audiobook. Any tips?

Also, is there any way to increase the chance of coming across a given card when going through a random custom study of a deck?

You appear to be asking about AnkiDroid - please post any future posts about it in the AnkiDroid section.