Recently I upgraded our iOS Project from Cordova 3.3 to 3.5.
mp3 files (that were previously downloaded into the iOS standard documents folder) will not play using the
The prefix documents ended working for me to take me to a persistent storage location within the app. In the source for the iOS plug-in it looks like you can use these prefixes:
"documents://" "http://" "https://" "cdvfile://"