If you're working on a scene you made on a previous version of the game, then the audio problem could be related to a small change to how Unreal Engine handles media (which would include audio). That could possibly be an issue for that.
As for the speech bubbles, those might also have been controlled with media, but that's unlikely. If speech bubbles still show up in the editor under the Assorted category, but they aren't in the scene, then you might have to re-add them to the scene. If they still appear in the scene but don't show up when not in edit mode, then if you had the speech bubble attached to something you might need to reattach it, or possibly might have to fix some of the events connected to the speech bubble for something like hiding/showing it.
Thanks for your answer,
I use
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(paid) only since some days, newly created scenes in sandbox mode, no scenes from previous versions.
I would like to generate audio voice files with text to speech like bark or tortoise.
And then I want to use these audio files to create dialogs (or dialogues) between the character and NPCs in scenes created in sandbox mode in wild life.
Photos can be inserted in sandbox mode and hung on the wall as paintings, or videos can be hung on the wall as a television.
So why no audio ?
Unfortunately, I didn't see any way to add audio files or create dialogs.
That surprises me with software that has been in development for so many years.
Maybe the developers don't want that for some reason.
I don't have a problem with the speech bubble item. If I add it in edit mode, it will also appear in the game. However, the speech bubble with the event system is almost unsuitable for creating dialogues between player and NPC.
I saw some wild life video tutorials from Steve on the YouTube channel (sandbox 2.0 basics, event system, custom poser ..). If I'm missing something and dialogues are possible, please let me know.
But the main game also only has a text-based dialogue system so far. As a result, the game lacks a large part of the atmosphere of a game.