$ gdb AudioBlend
GNU gdb (GDB) 7.0-ubuntu
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/ralf/Development/vala/projects/bug/src/AudioBlend...done.
(gdb) set args ~/Videos/musictrack.mp3 test.flv
(gdb) run
Starting program: /home/.../Development/vala/projects/bug/src/AudioBlend ~/Videos/musictrack.mp3 test.flv
[Thread debugging using libthread_db enabled]
[New Thread 0xb7eadb70 (LWP 23105)]
sending seek event...

Program received signal SIGSEGV, Segmentation fault.
0x0063204c in lame_encode_flush () from /usr/lib/libmp3lame.so.0
(gdb) bt
#0  0x0063204c in lame_encode_flush () from /usr/lib/libmp3lame.so.0
#1  0x00c09a75 in ?? () from /usr/lib/gstreamer-0.10/libgstlame.so
#2  0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#3  0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#4  0x002f1182 in ?? () from /usr/lib/libgstbase-0.10.so.0
#5  0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#6  0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#7  0x002f1182 in ?? () from /usr/lib/libgstbase-0.10.so.0
#8  0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#9  0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#10 0x00a7facd in ?? () from /usr/lib/libgstreamer-0.10.so.0
#11 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#12 0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#13 0x00a7facd in ?? () from /usr/lib/libgstreamer-0.10.so.0
#14 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#15 0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#16 0x00a97cbd in gst_pad_event_default () from /usr/lib/libgstreamer-0.10.so.0
#17 0x00ece985 in gst_mad_sink_event (pad=0x819a640, event=0x81bb190) at gstmad.c:1010
#18 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#19 0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#20 0x00415517 in gst_mp3parse_sink_event (pad=0x819a3e8, event=0x81bb190) at gstmpegaudioparse.c:565
#21 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#22 0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#23 0x00a97cbd in gst_pad_event_default () from /usr/lib/libgstreamer-0.10.so.0
#24 0x00613fcf in ?? () from /usr/lib/libgsttag-0.10.so.0
#25 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#26 0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#27 0x00e8d069 in ?? () from /usr/lib/gstreamer-0.10/libgstcoreelements.so
#28 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#29 0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#30 0x00a7facd in ?? () from /usr/lib/libgstreamer-0.10.so.0
#31 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#32 0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#33 0x002ebe77 in ?? () from /usr/lib/libgstbase-0.10.so.0
#34 0x002eb6f4 in ?? () from /usr/lib/libgstbase-0.10.so.0
#35 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#36 0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#37 0x00a7facd in ?? () from /usr/lib/libgstreamer-0.10.so.0
#38 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#39 0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#40 0x00e8c9ed in ?? () from /usr/lib/gstreamer-0.10/libgstcoreelements.so
#41 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#42 0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#43 0x0061744b in ?? () from /usr/lib/libgsttag-0.10.so.0
#44 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#45 0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#46 0x00415098 in mp3parse_handle_seek (pad=0x819a4b0, event=0x81bb0f0) at gstmpegaudioparse.c:1813
#47 mp3parse_src_event (pad=0x819a4b0, event=0x81bb0f0) at gstmpegaudioparse.c:1860
#48 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#49 0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#50 0x00ed1fe9 in gst_mad_src_event (pad=0x819a708, event=0x81bb0f0) at gstmad.c:810
#51 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#52 0x00a975bb in gst_pad_push_event () from /usr/lib/libgstreamer-0.10.so.0
#53 0x00a7facd in ?? () from /usr/lib/libgstreamer-0.10.so.0
#54 0x00a96dde in gst_pad_send_event () from /usr/lib/libgstreamer-0.10.so.0
#55 0x0804a795 in audio_mixer_on_state_changed (_sender=0x808d538, message=0x81c8ad0, self=0x805b8c8) at main.c:272
#56 _audio_mixer_on_state_changed_gst_bus_message (_sender=0x808d538, message=0x81c8ad0, self=0x805b8c8) at main.c:140
#57 0x00a684dc in ?? () from /usr/lib/libgstreamer-0.10.so.0
#58 0x0013e072 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#59 0x001537a8 in ?? () from /usr/lib/libgobject-2.0.so.0
#60 0x00154b2d in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#61 0x00154fb6 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#62 0x00a678d2 in gst_bus_async_signal_func () from /usr/lib/libgstreamer-0.10.so.0
---Type <return> to continue, or q <return> to quit---
#63 0x00a68fb5 in ?? () from /usr/lib/libgstreamer-0.10.so.0
#64 0x00cbae78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#65 0x00cbe720 in ?? () from /lib/libglib-2.0.so.0
#66 0x00cbeb8f in g_main_loop_run () from /lib/libglib-2.0.so.0
#67 0x08049da6 in audio_mixer_run (self=0x805b8c8) at main.c:322
#68 0x0804a8ed in _main (args=0xbffff3a4, args_length1=3) at main.c:496
#69 0x0804a970 in main (argc=3, argv=0xbffff3a4) at main.c:507
(gdb)