Here’s a very simple demo using a sound file that I recorded in Quicktime Player and uploaded to the project:
https://x.thunkable.com/copy/b87137992a70a4a5d0960d5c8dd44f6a
And here’s a dynamic way of choosing a sound file based on an image filename:
https://x.thunkable.com/copy/28795ae4c6c04137a17e606f565d2724
In this case, the image file is named cat.png or icecream.png and the audio file is named cat.m4a or icecream.m4a. If those naming patterns change, the project won’t work. But it will work for any files that fit that pattern.