How to get "cover/artwork" of song currently played?

Question

I'm grabbing the current song-details of the several media-players in Android with that solution:

IntentFilter iF = new IntentFilter();
iF.addAction("com.android.music.metachanged");
iF.addAction("com.android.music.playstatechanged");
...
registerReceiver(mReceiver, iF);

For track, album, author etc. it works fine, but now I also want to get the cover-art/artwork to display that at another position.

Has anyone an idea where I can find that informations? They seem to be not provided in the Intent-extras.