You can directly embed MP3 audio files into the page.
Just click ‘Add’ then ‘Media’. Find the MP3 file, upload it and click import.
Please don’t laugh at my attempt to play the piano…
YouTube is trickier but still fairly easy:
You need to create a video and add the soundtrack then upload to YT. Then click ‘Share’, ‘Embed’, and copy the code into code view of your web-page. The video can just be a still image or slide show or whatever.
Teasel wants to go to bed…
This one just created using basic windows tools. I’ll need to show you how, not complicated just can’t do it via email.