Firefox add-on disables autoplay feature on webpages.
Secondly, you can choose to block the media when loading a page. In this mode, Stop Autoplay replaces the media with a red frame. You have to press the red frame to load and then play the media. This way, you have control over the media you watch or listen to on the web.
Stop Autoplay has some additional features that will make your browsing experience even better. For example, it can convert the ie-only tag "bgsound" to "embed". Also, it can block Flash media by a customizable blacklist. So, you can decide which Flash media to watch, and which ones to block.
Overall, Stop Autoplay is an amazing add-on for Firefox that can help you block the autoplay of the embedded music and movie in a webpage, and then play it as you wish. It's worth mentioning that Stop Autoplay add-on is cross-platform and it works on Mac OS X, Windows, and Linux. So, everyone can enjoy its features regardless of their operating system.
Version 0.7.6: N/A