MP3s, podcasts, etc. are not really our thing - most of our readers want data they can use and you can't forward a clip from an MP3 or copy and paste it conveniently ( "go to minute 18 for my refutation!" doesn't work all that well) but they can be handy so I have added in some code in case you want to use them.

Just add in the mp3 as an inline link like you would do anything else and an arrow will appear next to the link in your article.   If people click the arrow, a small player opens up with controls for listening.

is how it looks in your article and this is how it will be for the user when they click the play button:

If you have determined that the community absolutely must hear multiple versions of "Don't worry, be happy" remixes, you can add more than one.