[gst-embedded] no element "filesrc"

[zhenfeng ren]

hello,everyone:
I want run Gstreamer on Davinci (dm6446).

I download gstreamer from:
  http://focus.ti.com/dsp/docs/dspsplash.tsp?contentId=3100
 When I run the "test_MP3.sh 1.mp3", there is an error:

ERROR: pipeline could not be constructed: no element "filesrc".

And when I run "gst-inspect", the information is below:
root@(none):/home# gst-inspect
staticelements:  bin: Generic bin
staticelements:  pipeline: Pipeline object
Total count: 1 plugin, 2 features

I set the environment  as :
root@(none):/home# export
LD_LIBRARY_PATH=.:/home/opt/system_files_gstreamer:/home/opt/gstreamer/lib
root@(none):/home# export
GST_PLUGIN_PATH=/home/opt/gstreamer/lib/gstreamer-0.10/
root@(none):/home# export PATH=$PATH:/home/opt/gstreamer/bin

Anyone give some suggestions?

Zhenfeng Ren