Let me save you a lot of time: The Cordova Media plugin (org.apache.cordova.media) does not work well on Android and Windows Phone 8, at least in the version released with Cordova 3.1 (and I don’t see any indication of a change in the latest release either).
What I did to play audio in a Cordova application was the following:
For Android, iPhone – use the following plugin:
cordova plugin add https://github.com/triceam/LowLatencyAudio
For Windows Phone 8, create a static HTML5 audio tag, get a pointer to it from the DOM (e.g, by getElementById) and just use the ‘play’ method on the returned object whenever you want to play the audio.