hi nicolai,
as said before: great widget.

two things i noticed:
1. after updating to the latest version i had to restart my phone to get it showing up and working. (but this shouldn't be a big problem at all i think)
2. this one is strange:
when playing a song via your widget and clicking the album art, the media player opens up as mentioned.
but when clicking the round play-button in the lower right corner, the media player goes to the title view.
there the album art is displayed correctly but the song information is wrong.
the song information seems always to be the one which i last listened to via the media player itself.
after the current song finishes playing, it swtiches to next song and there is everything right (album-art and song information)