Lucky for you, I rewrote the extension, so I also checked out the bug on coub and fixed it. It doesn't work perfectly there, so either that site is a hack, or it's Firefox causing it.

https://addons.mozilla.org/en-US/firefox/addon/list-and-open-media/

If I understood correctly, then you got error 171 and 140? I have no idea what those ones mean, unfortunately. ACRCloud doesn't list those error codes at all, I can only assume they have something to do with the default account being pretty close to its limits again.

You could try making your own account and try again.

Thx for the feedback.

I tested on that song (Eric Carmen's All by Myself) and it got it on first try, first 5 seconds.

By "open" tab, you mean "active" (as in, the one you're viewing) tab, correct? And you're then clicking the button and see the black bar on top of youtube, right?

Did you get "No result - 1001", or something else?

The server this addon uses by default is in Europe. I'm thinking, that if you're far away from EU, then there will be quite a bit of ping. That could possibly mess things up, though I'm not sure how.

If you are up for some testing, then please make your own account on acrcloud.com and try it with that. There's more info on that on the preferences page. It's free.

Thanks for the review.

EDIT 6/2: Thanks for your clarifications. The problem is, as you described, that it was a live version and had alterations.
If you were to create your own ACRCloud account and used the "recorded audio" checkbox, you might have better results with live performances. Though, I'm not sure if that will degrade results for studio stuff. Find further info in the add-on's preferences page, if you're interested.

If you want help then I'm gonna need a bit more details, like "which website I tried it on" and "my Firefox version is..". And "what went wrong" would be a nice addition too.
I've written down few steps for a trial run on the addon description, if you would try that.

Yeah, I made this so people could find that one odd song out there - every once in a while. Not really every song in their library. You can make your own account at acrcloud.com and get 100 free ID's every day, just for yourself. Check out the preferences page.

I'mma contact acrcloud (when I have time) and see if there's something they can do here, but I really suggest you make your own accounts if you have a big backlog of things to ID. Or use shazam like you suggested yourself.

There's actually no way of "buying" this addon, it's just the message the server gives off. I'll change that sometime.

Sorry for the misguided hopes, and thanks for letting me know this happened.