Don't get confused about whether or not you'll be able to find a certain video or audio file, Play All will do it for you.
Access the plugin from the browser's shortcut menu. The options that you have are the following: play all the multimedia files on the page, play only those that you've selected, or show all.
To begin working with this tool, you'll need to indicate which program you'd like to use to play the files, as well as which file formats you'd like to be able to access. The default formats activated are: AVI, MPEG, MPG, WMV, MOV, ASF, and MP3.
The program can read files accessible by a direct link, so it won't work with streaming video from pages like YouTube or Google Video.