There is a browser which is based on mizilla engine. If you install it and visit any site that have embeded video on that like youtube, metacafe etc, or audio like beemp3, audioable etc you are just one click away from download.

I have even downloaded embeded videos from restricted sites with this.

There will be a "Download media files" link once you right click on any page if that page has any media file like mp3, avi, mov etc.

Then from that menu, just select the desired file, and you are done. The download is in progress. You will be asked to show the download location based on your browser settings.

Here is the link