Another Y Combinator start launched at the SXSW festival: Echodio. It lets you backwards up your iTunes penalization accumulation to the Web and then course it from there. At start it exclusive supports moving finished Boxee, the media browser. But in a some weeks it module start its possess Web player, which module earmark you to course your iTunes songs from some machine with a Web browser.

TechCrunch readers crapper clew up today for 300 invites beatific for 5 GB worth of penalization hardware apiece (up from the connatural 1 GB). Simply ingest the promotional cipher TC/DC when prompted during set-up. The download currently entireness exclusive on Macs.

Launching with Boxee seems a taste odd. Most grouping module poverty to move for the Web contestant to embellish available. But the intent of championship up your iTunes playlists to the Web and literally motion it into a phonograph in the sky is appealing. Lala does something similar. And it seems same a feature Apple should physique into iTunes as well.

Until that happens, there is Echodio. You download the app, and it installs a plugin to iTunes. You create a newborn Echdio listing and place in every of the songs you poverty to backwards up. Then you crapper course it finished Boxee or yet Echodio’s possess Web player, which module hit two-way sync so that when you endeavor a strain via the Web it module calculate as a endeavor in iTunes. The start is also employed on an iPhone app (I surmisal for every the songs that you can’t sound on the iPhone’s possess iPod).

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