A GStreamer error has occurred Could not demultiplex stream

[simo]

Fails to play sample when looped. End of the output Output from running jokosher -d:

STATE CHANGED
-- status: GST_STATE_CHANGE_ASYNC
-- pending: GST_STATE_PAUSED
-- new: GST_STATE_READY
STATE CHANGED
-- status: GST_STATE_CHANGE_ASYNC
-- pending: GST_STATE_PAUSED
-- new: GST_STATE_READY
NEW PAD on instrument Audio File
STATE CHANGED
-- status: GST_STATE_CHANGE_SUCCESS
-- pending: GST_STATE_VOID_PENDING
-- new: GST_STATE_PAUSED
Gstreamer bus error: Could not demultiplex stream. qtdemux.c(520): gst_qtdemux_post_no_playable_stream_error (): /GstPipeline:timeline/GstBin:playbackbin/GstBin:Instrument_0/GnlComposition:gnlcomposition0/GnlSource:Event_4/Jokosher+elements+singledecodebin+SingleDecodeBin:jokosher+elements+singledecodebin+singledecodebin0/GstQTDemux:qtdemux1:
no known streams found
Domain: gst-stream-error-quark, Code: 9
Message: This file contains no playable streams.
Gstreamer bus error: Could not demultiplex stream. qtdemux.c(520): gst_qtdemux_post_no_playable_stream_error (): /GstPipeline:timeline/GstBin:playbackbin/GstBin:Instrument_32/GnlComposition:gnlcomposition2/GnlSource:Event_38/Jokosher+elements+singledecodebin+SingleDecodeBin:jokosher+elements+singledecodebin+singledecodebin16/GstQTDemux:qtdemux0:
no known streams found
Domain: gst-stream-error-quark, Code: 9
Message: This file contains no playable streams.
Gstreamer bus error: Could not demultiplex stream. qtdemux.c(520): gst_qtdemux_post_no_playable_stream_error (): /GstPipeline:timeline/GstBin:playbackbin/GstBin:Instrument_0/GnlComposition:gnlcomposition0/GnlSource:Event_9/Jokosher+elements+singledecodebin+SingleDecodeBin:jokosher+elements+singledecodebin+singledecodebin2/GstQTDemux:qtdemux2:
no known streams found
Domain: gst-stream-error-quark, Code: 9
Message: This file contains no playable streams.
Gstreamer bus error: Could not demultiplex stream. qtdemux.c(520): gst_qtdemux_post_no_playable_stream_error (): /GstPipeline:timeline/GstBin:playbackbin/GstBin:Instrument_32/GnlComp

[Laszlo Pandy (laszlok)]

We really need to convert all the files to flac or ogg on import. It
seems that you are using some other format like AAC (it is trying to
use quicktime demux), and mixing formats may create unnecessary
problems.