CyberGene It’s possible. The SoundManager 2 library this uses could conflict with another extension’s JavaScript.
As far as a staging environment, you’d have to look up how to install Flarum locally on your computer. Or, install another copy in some other ideally password protected directory on your server.
CyberGene I was just able to reproduce this on my local install. It's the way Flarum is working. It is either a Flarum Core bug, or this is the way the devs want it to work.
https://discuss.flarum.org/d/30033-js-library-from-forums-assets-folder-does-not-always-load
If we find out this is the way Flarum is supposed to work, then I'll have to abandon this extension.
010101 thanks, hopefully this gets solved because we’re a piano forum and would get use of an embedded player for audio files 
CyberGene: This version works around that Flarum core bug. The bug was due to how the JavaScript was loaded. Also, this helps to give you a solution to also allow users to download the audio if they want. Because, with this player you simply right-click on the link and download/save the audio file.
010101 I’ll try that, thanks!
Tested it, works great. I noticed something though. When I have a post with an audio URL and post it, there's no play button, only the URL, although the player works. I have to refresh the page to see the little play button in front of the URL, is that normal?
CyberGene Yeah that’s “normal” for this extension at least. 
But, let’s say immediately another user clicks on the post. They will see the play button. It’s a very temporary phenomenon that only the person who creates the post sees. And even then, the next time you view the post it’s there. 
And before anyone else comments who knows how to code Flarum extensions better than me. I know, there’s the oncreate vnode mithril stuff. It’s just, with the soundmanager audio library this uses, this was the best I could get it right now. 
010101 no problem, it’s OK. The extension works great on my forum now, thank you 
Not sure when it stopped working, haven't paid attention but the only change recently is I updated some extensions and Flarum form 1.2 to 1.2.1, and I don't have the play button anymore... I haven't installed new extensions though. Not sure when exactly it stopped working though.
010101 OK, it turned out it's the AdGuard blocker. Disabling it on the forum and the play buttons are visible again. However I also notice the problem on Vivaldi and Brave browsers which have an embedded adblocker. This wasn't the case before.
Does this extension contain trackers or tracking technologies? Is it sending some data to Google or stuff like that?
CyberGene No.
I have read that ad blockers can sometimes think certain JavaScript is an ad. I don’t think I can solve this.
There are no ads or tracking in this extension. It is simply, SoundManager 2.
It's OK now again. I guess there might have been a filtering rule definition that got messed up but was fixed later. Those filters are constantly being refined and published on the Internet, so all is OK again. I have re-enabled the ad-blocker.
