And see here: How can I make it so that music (mp3 files) can be played from the external SD card, whether directly or indirectly?
sorry, I just have seen this thread...
what happens, if you use a relative path to the root directory, i.e. an empty string?
see also the documentation about how to use the extension...
so what exactly was the solution to your problem? To ask for READ_EXTERNAL_STORAGE permission?
Taifun
PS: I moved to your new question to a new topic, because it is something completely different...