When I try open my Home/Desktop/Documents/Music folders my Movie Player starts and I get a Gstreamer error message. I only want to start Nautilus!
I am on Maverick now and I had a similar problem (except with Rhythmbox) when I was on Lucid.
GNOME 2.32.0 (Ubuntu 2010-09-27)
Kernal Linux 2.6.35-25-generic
CPU: AMD 64x2 5200