Online music streamer Rdio is embracing freemium with a slick redesign that emphasizes free radio-like streams. The freemium model helped Spotify grow its substantial user base, and is seen as part of the reason that Rdio, which does not share user numbers, has grown much more slowly. “What we’ve learned collectively over the last few years,” said Anthony Bay, Rdio’s chief executive, “is that the most successful models are freemium models.” Rdio = Pandora + On Demand Music As each music streamer works to differentiate itself from a growing list of competitors, Rdio is staking out an interesting position: a...

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