gstreamer play audio to usb audio fail

[Soho Soho123]

Dears,

I got error when I try to play audio file (.wav) to usb audio device.
file source is usb storge, i use the command to play audio:
gst-launch-0.10 filesrc
location=/var/tmp/usb/sda1/audio_src/audio_src_48k_le.wav ! wavparse !
audioconvert ! alsasink device="hw:0,0"&

EROLLING ...
ERROR: from element /GstPipeline:pipeline0/GstWavParse:wavparse0:
Internal data flow error.
Additional debug info:
gstwavparse.c(2110): gst_wavparse_loop ():
/GstPipeline:pipeline0/GstWavParse:wavparse0:
streaming task paused, reason not-linked (-1)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...


Also, when i try to play audio file via Rygel renderer , it is fail ,too.
the reason is the same as gst-launch,
what is "reason not-linked (-1)"?
Does any one have idea?

But when i try to play audio file by "aplay" , it is OK.
is there some thing wrong in gstreamer?