root@fic-gta01:/media/card/media$ gst-launch playbin uri=file:///media/card/media/15-cl_smooth-appreciate-ftd.mp3
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...

(gst-launch-0.10:1217): GStreamer-WARNING **: pad mad0:src returned caps which are not a real subset of its template caps
ERROR: from element /playbin0/source: Internal data flow error.
Additional debug info:
gstbasesrc.c(1816): gst_base_src_loop (): /playbin0/source:
streaming task paused, reason not-negotiated (-4)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
FREEING pipeline ...