(gdb) bt
#0  0x4d5b783d in g_value_set_object (value=0xbfffd3ec, v_object=0x4d5d6f27) at gobject.c:3131

#1  0x008bef01 in gst_play_bin_get_property (object=0x8e51428 [GstPlayBin2], prop_id=3, value=0xbfffd3ec, pspec=
    0x8e444c8 [GParamObject]) at gstplaybin2.c:1925
#2  0x4d5b5141 in object_get_property (value=0xbfffd3ec, pspec=<optimized out>, object=0x8e51428 [GstPlayBin2])
    at gobject.c:1131
#3  g_object_get_valist (object=0x8e51428 [GstPlayBin2], first_property_name=0x4230679d "source", var_args=
    0xbfffd448 "l\324\377\277") at gobject.c:1780
#4  0x4d5b5468 in g_object_get (_object=0x8e51428, first_property_name=0x4230679d "source") at gobject.c:1870
#5  0x422e87bb in source_notify_cb (object=0x8e51428 [GstPlayBin2], pspec=0x8e444c8 [GParamObject], player=
    0x825b810 [RBPlayerGst]) at rb-player-gst.c:626
#6  0x4d5ca7bb in g_cclosure_marshal_VOID__PARAM (closure=0x8e51028, return_value=0x0, n_param_values=2, param_values=
    0xb5404718, invocation_hint=0xbfffd5b0, marshal_data=0x0) at gmarshal.c:533
#7  0x4d5ae025 in g_closure_invoke (closure=0x8e51028, return_value=0x0, n_param_values=2, param_values=0xb5404718, 
    invocation_hint=0xbfffd5b0) at gclosure.c:767
#8  0x4d5c03b0 in signal_emit_unlocked_R (node=0x805c6e0, detail=3097, instance=0x8e51428, emission_return=0x0, 
    instance_and_params=0xb5404718) at gsignal.c:3252
#9  0x4d5c9442 in g_signal_emit_valist (instance=0x8e51428, signal_id=1, detail=3097, var_args=
    0xbfffd770 "/\320;MX\367YMi\374ZM\350R\376N(\024\345\b\001") at gsignal.c:2983
#10 0x4d5c95c4 in g_signal_emit (instance=0x8e51428, signal_id=1, detail=3097) at gsignal.c:3040
#11 0x4d5afcb7 in g_object_dispatch_properties_changed (object=0x8e51428 [GstPlayBin2], n_pspecs=1, pspecs=0xbfffd850)
    at gobject.c:925
#12 0x4ef1df83 in gst_object_dispatch_properties_changed (object=0x8e51428 [GstPlayBin2], n_pspecs=1, pspecs=0xbfffd850)
    at gstobject.c:526
#13 0x4d5af0f0 in g_object_notify_dispatcher (object=0x8e51428 [GstPlayBin2], n_pspecs=1, pspecs=0xbfffd850) at gobject.c:330
---Type <return> to continue, or q <return> to quit---
#14 0x4d5b2082 in g_object_notify_queue_thaw (nqueue=<optimized out>, object=0x8e51428 [GstPlayBin2])
    at gobjectnotifyqueue.c:132
#15 g_object_notify_by_spec_internal (pspec=0x4d5ef79c, object=0x8e51428 [GstPlayBin2]) at gobject.c:983
#16 g_object_notify (object=0x8e51428 [GstPlayBin2], property_name=0x8e29e5 "source") at gobject.c:1024
#17 0x008bb23a in notify_source_cb (uridecodebin=0x8fa5560 [GstURIDecodeBin], pspec=0x8f9e250 [GParamObject], group=0x8e5152c)
    at gstplaybin2.c:3204
#18 0x4d5ca7bb in g_cclosure_marshal_VOID__PARAM (closure=0xb54463a0, return_value=0x0, n_param_values=2, param_values=
    0xb740c878, invocation_hint=0xbfffda20, marshal_data=0x0) at gmarshal.c:533
#19 0x4d5ae025 in g_closure_invoke (closure=0xb54463a0, return_value=0x0, n_param_values=2, param_values=0xb740c878, 
    invocation_hint=0xbfffda20) at gclosure.c:767
#20 0x4d5c03b0 in signal_emit_unlocked_R (node=0x805c6e0, detail=3097, instance=0x8fa5560, emission_return=0x0, 
    instance_and_params=0xb740c878) at gsignal.c:3252
#21 0x4d5c9442 in g_signal_emit_valist (instance=0x8fa5560, signal_id=1, detail=3097, var_args=
    0xbfffdbe0 "/\320;MX\367YMi\374ZM\350R\376N`U\372\b\001") at gsignal.c:2983
#22 0x4d5c95c4 in g_signal_emit (instance=0x8fa5560, signal_id=1, detail=3097) at gsignal.c:3040
#23 0x4d5afcb7 in g_object_dispatch_properties_changed (object=0x8fa5560 [GstURIDecodeBin], n_pspecs=1, pspecs=0xbfffdcc0)
    at gobject.c:925
#24 0x4ef1df83 in gst_object_dispatch_properties_changed (object=0x8fa5560 [GstURIDecodeBin], n_pspecs=1, pspecs=0xbfffdcc0)
    at gstobject.c:526
#25 0x4d5af0f0 in g_object_notify_dispatcher (object=0x8fa5560 [GstURIDecodeBin], n_pspecs=1, pspecs=0xbfffdcc0)
    at gobject.c:330
#26 0x4d5b2082 in g_object_notify_queue_thaw (nqueue=<optimized out>, object=0x8fa5560 [GstURIDecodeBin])
    at gobjectnotifyqueue.c:132
#27 g_object_notify_by_spec_internal (pspec=0x4d5ef79c, object=0x8fa5560 [GstURIDecodeBin]) at gobject.c:983
---Type <return> to continue, or q <return> to quit--- 
#28 g_object_notify (object=0x8fa5560 [GstURIDecodeBin], property_name=0xd36a50 "source") at gobject.c:1024
#29 0x00d3188a in setup_source (decoder=0x8fa5560 [GstURIDecodeBin]) at gsturidecodebin.c:1913
#30 gst_uri_decode_bin_change_state (element=0x8fa5560 [GstURIDecodeBin], transition=GST_STATE_CHANGE_READY_TO_PAUSED)
    at gsturidecodebin.c:2388
#31 0x4ef3bc6c in gst_element_change_state (element=0x8fa5560 [GstURIDecodeBin], transition=GST_STATE_CHANGE_READY_TO_PAUSED)
    at gstelement.c:2718
#32 0x4ef3c725 in gst_element_set_state_func (element=0x8fa5560 [GstURIDecodeBin], state=GST_STATE_PAUSED)
    at gstelement.c:2674
#33 0x4ef3b9b1 in gst_element_set_state (element=0x8fa5560 [GstURIDecodeBin], state=GST_STATE_PAUSED) at gstelement.c:2575
#34 0x4ef26be6 in gst_bin_element_set_state (next=GST_STATE_PAUSED, current=GST_STATE_READY, start_time=0, base_time=0, 
    element=0x8fa5560 [GstURIDecodeBin], bin=0x8e51428 [GstPlayBin2]) at gstbin.c:2193
#35 gst_bin_change_state_func (element=0x8e51428 [GstPlayBin2], transition=GST_STATE_CHANGE_READY_TO_PAUSED) at gstbin.c:2489
#36 0x4ef5f3fc in gst_pipeline_change_state (element=0x8e51428 [GstPlayBin2], transition=GST_STATE_CHANGE_READY_TO_PAUSED)
    at gstpipeline.c:482
#37 0x008bd62a in gst_play_bin_change_state (element=0x8e51428 [GstPlayBin2], transition=GST_STATE_CHANGE_READY_TO_PAUSED)
    at gstplaybin2.c:3695
#38 0x4ef3bc6c in gst_element_change_state (element=0x8e51428 [GstPlayBin2], transition=GST_STATE_CHANGE_READY_TO_PAUSED)
    at gstelement.c:2718
#39 0x4ef3c725 in gst_element_set_state_func (element=0x8e51428 [GstPlayBin2], state=GST_STATE_PLAYING) at gstelement.c:2674
#40 0x4ef3b9b1 in gst_element_set_state (element=0x8e51428 [GstPlayBin2], state=GST_STATE_PLAYING) at gstelement.c:2575
#41 0x422e91f2 in start_state_change (mp=0x825b810 [RBPlayerGst], state=<optimized out>, action=FINISH_TRACK_CHANGE)
    at rb-player-gst.c:392
#42 0x422e93bb in state_change_finished (mp=0x825b810 [RBPlayerGst], error=<optimized out>) at rb-player-gst.c:421
#43 0x422e9e1d in impl_play (player=0x825b810, play_type=RB_PLAYER_PLAY_REPLACE, crossfade=0, error=0xbfffe2b8)
---Type <return> to continue, or q <return> to quit---
    at rb-player-gst.c:859
#44 0x422d94cc in rb_player_play (player=0x825b810, play_type=RB_PLAYER_PLAY_REPLACE, crossfade=0, error=0xbfffe2b8)
    at rb-player.c:434
#45 0x4225fabc in rb_shell_player_open_location (player=0x81ed050 [RBShellPlayer], entry=0x89c5d70, play_type=
    RB_PLAYER_PLAY_REPLACE, error=0xbfffe2b8) at rb-shell-player.c:1654
#46 0x42261794 in rb_shell_player_set_playing_entry (player=0x81ed050 [RBShellPlayer], entry=0x89c5d70, out_of_order=1, 
    wait_for_eos=0, error=0xbfffe318) at rb-shell-player.c:1769
#47 0x42264caa in rb_shell_player_entry_activated_cb (view=0x832d290 [RBEntryView], entry=0x89c5d70, player=
    0x81ed050 [RBShellPlayer]) at rb-shell-player.c:2732
#48 0x4d5ca87b in g_cclosure_marshal_VOID__BOXED (closure=0x8977dc8, return_value=0x0, n_param_values=2, param_values=
    0x8e4f6c8, invocation_hint=0xbfffe470, marshal_data=0x0) at gmarshal.c:568
#49 0x4d5ae025 in g_closure_invoke (closure=0x8977dc8, return_value=0x0, n_param_values=2, param_values=0x8e4f6c8, 
    invocation_hint=0xbfffe470) at gclosure.c:767
#50 0x4d5c03b0 in signal_emit_unlocked_R (node=0x82d92d0, detail=0, instance=0x832d290, emission_return=0x0, 
    instance_and_params=0x8e4f6c8) at gsignal.c:3252
#51 0x4d5c9442 in g_signal_emit_valist (instance=0x832d290, signal_id=344, detail=0, var_args=0xbfffe630 "^\371\060B")
    at gsignal.c:2983
#52 0x4d5c95c4 in g_signal_emit (instance=0x832d290, signal_id=344, detail=0) at gsignal.c:3040
#53 0x4229fcb9 in rb_entry_view_row_activated_cb (treeview=0x831f598 [GtkTreeView], path=0xb740d628, column=
    0x834c758 [GtkTreeViewColumn], view=0x832d290 [RBEntryView]) at rb-entry-view.c:2105
#54 0x41b7db12 in _gtk_marshal_VOID__BOXED_OBJECT (closure=0x83a9690, return_value=0x0, n_param_values=3, param_values=
    0x8e1a790, invocation_hint=0xbfffe7a0, marshal_data=0x0) at gtkmarshalers.c:1386
#55 0x4d5ae025 in g_closure_invoke (closure=0x83a9690, return_value=0x0, n_param_values=3, param_values=0x8e1a790, 
    invocation_hint=0xbfffe7a0) at gclosure.c:767
---Type <return> to continue, or q <return> to quit---
#56 0x4d5c03b0 in signal_emit_unlocked_R (node=0x81da8c0, detail=0, instance=0x831f598, emission_return=0x0, 
    instance_and_params=0x8e1a790) at gsignal.c:3252
#57 0x4d5c9442 in g_signal_emit_valist (instance=0x831f598, signal_id=144, detail=0, var_args=
    0xbfffe964 "\036\313\332A\210\351\377\277`\341\345A`\341\345A`\341\345AX\307\064\b\342P\312A\230\365\061\b\240&\343\bX\307\064\b\354\354\332A\034\352\377\277") at gsignal.c:2983
#58 0x4d5c95c4 in g_signal_emit (instance=0x831f598, signal_id=144, detail=0) at gsignal.c:3040
#59 0x41c9fc7a in gtk_tree_view_row_activated (tree_view=0x831f598 [GtkTreeView], path=0x8e326a0, column=
    0x834c758 [GtkTreeViewColumn]) at gtktreeview.c:12509
#60 0x41ca50e2 in gtk_tree_view_button_press (widget=0x831f598 [GtkTreeView], event=0x8d31920) at gtktreeview.c:3247
#61 0x41b7bd1a in _gtk_marshal_BOOLEAN__BOXED (closure=0x818edb8, return_value=0xbfffebb4, n_param_values=2, param_values=
    0xb740c400, invocation_hint=0xbfffeba0, marshal_data=0x41ca4790) at gtkmarshalers.c:85
#62 0x4d5ac8ce in g_type_class_meta_marshal (closure=0x818edb8, return_value=0xbfffebb4, n_param_values=2, param_values=
    0xb740c400, invocation_hint=0xbfffeba0, marshal_data=0xc0) at gclosure.c:878
#63 0x4d5ae025 in g_closure_invoke (closure=0x818edb8, return_value=0xbfffebb4, n_param_values=2, param_values=0xb740c400, 
    invocation_hint=0xbfffeba0) at gclosure.c:767
#64 0x4d5c01cf in signal_emit_unlocked_R (node=0x818ef50, detail=0, instance=0x831f598, emission_return=0xbfffecec, 
    instance_and_params=0xb740c400) at gsignal.c:3290
#65 0x4d5c9228 in g_signal_emit_valist (instance=0x831f598, signal_id=67, detail=0, var_args=
    0xbfffed60 "\214\355\377\277 \031\323\b\310\062@\265\344\006\314A\230\365\061\bp\373\034\b\001") at gsignal.c:2993
#66 0x4d5c95c4 in g_signal_emit (instance=0x831f598, signal_id=67, detail=0) at gsignal.c:3040
#67 0x41cc08c3 in gtk_widget_event_internal (widget=0x831f598 [GtkTreeView], event=0x8d31920) at gtkwidget.c:6116
#68 0x41b7b502 in gtk_propagate_event (widget=0x831f598 [GtkTreeView], event=0x8d31920) at gtkmain.c:2597
#69 0x422f637e in rb_tree_dnd_button_release_event_cb (widget=0x831f598 [GtkTreeView], event=0x8d319d0, data=0x0)
    at rb-tree-dnd.c:383
---Type <return> to continue, or q <return> to quit---
#70 0x41b7bd1a in _gtk_marshal_BOOLEAN__BOXED (closure=0x90c7ac8, return_value=0xbfffef44, n_param_values=2, param_values=
    0xb54032c8, invocation_hint=0xbfffef30, marshal_data=0x0) at gtkmarshalers.c:85
#71 0x4d5ae025 in g_closure_invoke (closure=0x90c7ac8, return_value=0xbfffef44, n_param_values=2, param_values=0xb54032c8, 
    invocation_hint=0xbfffef30) at gclosure.c:767
#72 0x4d5c03b0 in signal_emit_unlocked_R (node=0x81e0770, detail=0, instance=0x831f598, emission_return=0xbffff07c, 
    instance_and_params=0xb54032c8) at gsignal.c:3252
#73 0x4d5c9228 in g_signal_emit_valist (instance=0x831f598, signal_id=68, detail=0, var_args=
    0xbffff0f0 "\034\361\377\277\320\031\323\b\230\365\061\b\344\006\314A\230\365\061\bp\373\034\bX@\027\b") at gsignal.c:2993
#74 0x4d5c95c4 in g_signal_emit (instance=0x831f598, signal_id=68, detail=0) at gsignal.c:3040
#75 0x41cc08c3 in gtk_widget_event_internal (widget=0x831f598 [GtkTreeView], event=0x8d319d0) at gtkwidget.c:6116
#76 0x41b7b502 in gtk_propagate_event (widget=0x831f598 [GtkTreeView], event=0x8d319d0) at gtkmain.c:2597
#77 0x41b7b8d8 in gtk_main_do_event (event=0x8d319d0) at gtkmain.c:1872
#78 0x415d3c5d in _gdk_event_emit (event=0x8d319d0) at gdkevents.c:71
#79 0x415fb7e9 in gdk_event_source_dispatch (source=0x81938d8, callback=0, user_data=0x0) at gdkeventsource.c:318
#80 0x4d4a55bf in g_main_dispatch (context=0x81778c8) at gmain.c:2441
#81 g_main_context_dispatch (context=0x81778c8) at gmain.c:3014
#82 0x4d4a5d30 in g_main_context_iterate (context=0x81778c8, block=1296779904, dispatch=1, self=0x8052028) at gmain.c:3092
#83 0x4d4a6457 in g_main_loop_run (loop=0x8a875e0) at gmain.c:3300
#84 0x41b7abf5 in gtk_main () at gtkmain.c:1358
#85 0x0804a3a6 in main (argc=1, argv=0xbffff454) at main.c:332
(gdb) 

