concerto/concerto — pull request #740 by mfrederickson (2013-10-12 00:03:09+00:00)
Title: relative path preview fix for #728

This fixes the relative path but does not address the named route issue-- I'm not sure how to do that and pass the string interpolation path function the values from javascript...

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MMM should reflect the `media_id.val()` and WWW should reflect the `preview.width()`