If you're looking at the Media icon, a triangle shaped icon on the top right of my screen shot, that's a "play" icon. If you're speaking of the actual music icon, if your icon looks like a lower case d with a tail, that's a music note.
If you have a true "D" somewhere, please take a screen so I can try to hunt it down.
If you use the quick reply feature here, don't (for this), click "Post Reply". Then, below the reply box you will see a button for "manage attachments", click that.
That's odd. That's should be the icon for "Default Application"... I'm not sure what "Default Application" is even used for... but I made the icon anyway :-)
OTA Link: http://www.bbthemelab.com/s/5jDW6g
