Playlistdio is a website that acts like an extension to my favorite music streaming service Rdio. Type in a musician and a playlist comprised of 50 top songs by that artist will be created and ready to play in your Rdio account. You can even access the site from your smartphone or tablet and it will automatically launch the playlist via the Rdio mobile app. It’s a pretty nifty tool say if you’re discovering new artists and don’t know where to start within their discog. Playlistdio also removes duplicate songs from your playlists.