OneClick+: It's a Google chrome extension to provide an one click solution of adding your currently playing songs to your Rdio playlist. OneClick+ works with Rdio¨.

Overview
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This extension uses the 3-legged Oauth authentication to your Rdio account. After doing the initial handshake of exchanging tokens, it loads your owned playlist 
and the most recently played song. One can just click on the '+' link against a playlist name to add that song to that playlist. It's an one click solution to add your currently playing song 
to one of your playlist. 

a) It is useful for people who listens to lot of recommendations and would like to easily add the song they are currently listening to a playlist of their choice.
b) You have an option to create a new playlist and add the new song to it. 
c) You can search for songs, and it will return the most common track(top hit) for that search query. You can then again add the song to the playlist of your choice or add another new playlist.

I hope you will find OneClick+ useful. In case you like it feel free to Tweet about it or like it on Facebook.
 
You can reach me via my Twitter account www.twitter.com/kapildalwani or get in touch with me at www.about.me/kapil.dalwani to send feedback and suggestions. 
Feel free to use/redistribute/modify the code as per the BSD LICENSING.

To show your love follow the official twitter account at www.twitter.com/1clickadd.

Git hub https://github.com/kapild/OneClickAdd
Facebook http://www.facebook.com/pages/OneClick/176915195701748
For developers feel free to log bug or suggest improvements on UI and features to be added.

Download the app from the Chrome store. 

New features coming soon, so stay tune!