To add a site, just go to the Sidebar menu and pick ‘add site’ and enter the web address. Here are 4 great ways to make use of this feature:
Torrent Sites
Add a bittorrent website to the Miro sidebar and then browse the site as you normally would. Click a torrent file and Miro will start the download instantly. When it’s done, just click to watch. It’s the world’s simplest way to use torrents (and a good way to teach friends how).

Download YouTube Videos
If you add YouTube in the Sites section, you can browse and watch videos– when you find one that you want to download, simply click the ‘Download this video’ button at the top of the page. Miro will download the highest quality file that YouTube offers for that video.

Music Blogs
Add an MP3 blog to the Miro sidebar and click on a song or album to download it right into your audio library.

Video Download Sites
Any site that links to video files, in this example Archive.org, will work great in the sidebar. Click the link to the video file and it downloads into your video library.

http://www.getmiro.com/blog/2009/07/4-ways...ts-within-miro/