import gst

def new_decode_pad(dbin, pad, islast):
	pad.link(convert.get_pad("sink"))

pipeline = gst.Pipeline("server")

filesrc = gst.element_factory_make("filesrc", "source")
pipeline.add(filesrc)

filesrc.set_property("location", 'foo.wav')

decode = gst.element_factory_make("decodebin", "decode")
decode.connect("new-decoded-pad", new_decode_pad)
pipeline.add(decode)
filesrc.link(decode)

convert = gst.element_factory_make("audioconvert", "convert")
pipeline.add(convert)

sink = gst.element_factory_make("fakesink", "sink")
pipeline.add(sink)
convert.link(sink)

pipeline.set_state(gst.STATE_PAUSED)