Why doesn't R.raw.'songname' not work on android devices?

I have some media (Audio tracks) on an app, with file path 'R.raw.test'.

I use some code to get it into a mediaplayer:

MediaPlayer.create(Textbox.this, R.raw.fly);

And it works PERFECTLY on the Android Emulator (plays track on click of button).

Why, when I put it on my Archos (5 IT) it doesn't work at all?

As soon as the button is clicked, it crashes. Do开发者_Python百科 you have to do something to file paths or what?

Have a look to this thread.
MediaPlayer.create(Textbox.this, R.raw.fly); should work on your Archos.