This isn’t a project I built with Rdio. It’s an open source project I designed working at Metronomik, though we did discuss the controls with Rdio & they tweeted about them for their Australian Hack Days.
We built an autocomplete search control for Rdio.
A simple player control for Rdio
I designed a simple site for us to make developers aware of how each control worked. We also built a generator (view the live site) where developers could customise colours in order to better integrate the controls into their apps.