I posted about it in a review, and per request, am restating the issue here: the Firefox for Android app has consistent and ongoing issues with embedded audio players/embedded audio files (most often file types hosted on dropbox and embedded on a secondary website) where the audio file will either not load at all, refuse to download because it has timed out the file without playing, or stop half way through and refuse to reload. So far, I've had about a 30% success rate with using these embedded audio players across platforms, with the specific websites themselves looking into broken links and finding no issue. On the same vein, YouTube as used through the mobile browser, while more successful, seems to struggle to load the page while scrolling, and occasionally stops playing videos altogether, even when reloaded and hard restarted.