Hello Ian,
you could try this approach, though it requires some code:
https://medium.com/inside-pubcoder/scrollin-scratchin-16f84ff4cb4d

If that is not the case, please try with this beta version:
https://www.dropbox.com/s/52w8e3k2e1i8pcj/PubCoder-bin-20200924-3.10.1.1104.zip?dl=0

we discovered a bug when using action *Play Audio File* inside a *Dropped Outside Zone* action list in a *Drag Object* action

Please let us know if this fixes the error

Hello, we are aware of this issue in the HTML export. We are working on a brand new HTML reader which will solve the issue. Please check back in some weeks.

Hello Kathrtyn,
this error usually comes from copy-pasting read aloud text boxes, please check & clean your text boxes and redo the read aloud on the faulty page. The error in PubCoder should tell you which is the duplicate ID to help you find it.

Ciao Beatrice,
puoi caricare il tuo progetto a questo indirizzo così diamo un'occhiata?
https://www.dropbox.com/request/PJBumFBztDUg1r775tjj

In quale pagina è presente l'errore?

Hello Nadine,
an audio asset is simply an audio file that has been added to a PubCoder project.

Hello Tina,
please write to support and share your project file here so we can have a look: https://www.dropbox.com/request/PJBumFBztDUg1r775tjj

A bit late, but we've finally found a way:

https://medium.com/inside-pubcoder/how-to-embed-hype-animations-and-html5-widgets-in-pubcoder-c2e883fc5b7

Hello Kumar, that's the way read aloud works as defined by the EPUB standard. It is a media overlay with a global on/off status for the entire book.
Maybe you should use something different (e.g. play audio action and an action to highlight the character, like a run javascript or switchimage) for your use case.

Of course, you can set the smart object containing the animation as "Hidden" in the selection inspector; then use a "show object" action to display it when needed.
You can also use "Run Javascript" actions to play/pause the animation, as explained here: https://t.co/WCdphxMIqd