I'm trying to play a mp3 on a Nexus one (2.3.7).
I get Unable to use <gstreamer> as loader! when the application starts and I get Unable to found a loader for </mnt/sdcard/test.mp3> when I try to play the mp3.
I saw on the google group that there was a fix for a similar problem : https://groups.google.com/forum/?fromgroups#!searchin/kivy-users/gstreamer/kivy-users/dbO-9_aprRo/37mlQCSsjGEJ