auto select plugin in Rygel

[Soho Soho123 <soho123 2012 gmail com>]

Dear Jens,

As my understanding, Rygel can get audio file from media server, and
then send to audio device,
like the pipeline by gst-launch(below)

gst-launch-0.10 filesrc location=/bin/audio_src_48k_le.wav ! wavparse !
audioconvert ! alsasink device="hw:0,0"


Could you kindly provide the hint about where is the code to complete
the pipeline?

as my understanding,
gst-launch command specify the suitable pad for link src to sink,
In Rygel,
where is the code to complete the behavior automatically?


Thanks!
Soho