@Pealco and @Whittfield thank you for your help. I wanted to try your suggestions, but discovered that I couldn’t get past the first step. That is, I couldn’t figure out how to get “Hosted Assets” to work for me at all (I’ve always used local assets up to now). If you can help me that would be great, otherwise maybe I should post a new thread? Let me know
Here’s what I tried: I opened a new Blocs project, added an audio player and then used the “Add Hosted Asset” in the Asset Manager

then, into the URL box I pasted the following test audio I found on the web:
https://ia802508.us.archive.org/5/items/testmp3testfile/mpthreetest.mp3
and finally assigned that audio to the audio player:

But when I build my project and test it I get no audio. Then, viewing the page source I can see that it is trying to link to the audio as if it were a local asset.
I must be doing something wrong in Blocs because that audio plays immediately if you copy the link to a browser. I also wanted to try the “Bulk Add Hosted Assets” (which looks like a great feature) but I had no idea how to use that [see note* below]. I’ve looked in the documentation and in the forum for more instructions on using hosted assets and bulk hosted assets but found nothing helpful.
One more thing I noticed: The Asset manager seems to understand that this is a hosted asset because right-click --> “Open in Browser” works fine. However, right-click --> “Preview Audio” doesn’t work. If this is normal behavior, it’s confusing why “Preview Audio” would be in that menu.

Thanks,
-Tony
*note: regarding how to use “Bulk Add Hosted Assets”, Norm helped me on that. In brief, you copy the urls for the hosted assets into the text box like this: url1,url2,url3,url4 etc… for example url1 might be the text:
https://ia802508.us.archive.org/5/items/testmp3testfile/mpthreetest.mp3
No quotes or spaces are needed–just commas between each url. Then you place a comma into the separator box.