Question

Why this won’t work on a device but it works on a bb simulator.
Do you have any suggestions to make it work on the device?

   Invocation invocation = new Invocation("file:///SDCard/BlackBerry/music/song.mp3"); 
   Registry reg = Registry.getRegistry("net.rim.device.api.content.BlackBerryContentHandler");
   reg.invoke(invocation);

Answer 1

I found the solution by registering not the content handler but the application package.
In my case:

Registry _registry=Registry.getRegistry("myapp.mobile.app");