I recommend the JavaScript Button. It is possible to store urls of sounds you would like to play in an audio
and then use the JacaScript button to find the audio by id
and play
You will just have to host your audio files somewhere to access them.
I have not tried if it is possible to put mp3 files in a resource folder in your project and access them there.
If you are interested to learn more about the basics and functions of Mendix, you can have a look for the learning paths on the Academy section on that page.
Many thanks for your reply. As a newbie, I am not sure where to put the Javascript button so that the system knows where to find it, or where I find a resource folder in my project to try the MP3s. Can you point me in the right direction?
Also, do you recommend that I learn the basics of javascript to use with mendix? I know just enough about programming to be seriously incompetent at this stage, although I have built great functional programs in excel for many purposes, and used a small amount of VBA in the process. If using the button, all I have to do is copy and paste the snippets above into the button and substitute the filename in each case, no problem, but I have never written a line of javascript before.