Original commit message from CVS:
Reviewed by:  Ronald S. Bultje  <rbultje@ronald.bitfreak.net>
* ext/mad/gstmad.c: (gst_mad_src_event):
* gst/avi/gstavidemux.c: (gst_avi_demux_handle_src_event):
Allow seeks on audio pad, make mad forward those (#164826).
* gst/audioscale/gstaudioscale.c: (gst_audioscale_chain):
Set duration (#165335).