Can I imbed an audio file in my blog posts?

I'm trying to include a reading of each post, it's pretty much the point of my site. Is this something that's possible?

Sure, you can add an audio block, the same way as any other content block,  and upload an mp3 file. 

Is this dependent on my site style? Because I can't seem to figure out how to add an audio file.

You have to record it using a media program like in Windows and save it as an mp3. Edit your blog and add an audio block and then upload the file or link it to a file. Here is an example of an embedded audio file in a 7.0 site that works the same for 7.1  

https://christinegregoryphotography.com/blog/tiffanys 

Here is one more:

https://myrandomviews.com/blog/dianesbirthday

And the guide to posting an audio file on your site.

https://support.squarespace.com/hc/en-us/articles/206543197-Audio-Blocks

Right,  so I can add an audio block to the site itself just fine. But when I go to the "edit section" menu of an actual blog post, I do not see an option to add audio blocks. I've attached a screenshot of the menu. Blog posts seem to have more limited options than a regular page. Am I missing something?

I knew I had to be missing something, thank you!