... how to put sound files onto a blog...
it is easy to embed Youtube videos in a blog -- you just use the clapperboard icon at the top of the editing page ... sound files on their own are more difficult - but someone on the web has explained how to do this
https://assistblogger.com/how-to-add-audio-file-to-blogger-blogspot-post-in-2019-working-perfectly/
for an example , listen to birdsong here
.
.and from Soundcloud ...
https://www.mybloggerlab.com/2013/02/how-to-embed-soundcloud-tracks-in-your-blogger.html##targetText=From%20the%20list%20of%20options,like%20the%20player%20to%20appear.
Soundcloud
https://soundcloud.com/discover