[casa@hp xfburn-git-20150717]$ xfburn/xfburn 
DBG[xfburn-main.c:269] main(): xfburn version 0.5.5 for Xfce 4.12

DBG[xfburn-settings.c:302] load_settings(): parsed
DBG[xfburn-device-list.c:231] xfburn_device_list_init(): Constructing device list
DBG[xfburn-device-list.c:264] get_libburn_device_list(): Before scanning for drives
DBG[xfburn-device-list.c:267] get_libburn_device_list(): After scanning for drives
DBG[xfburn-device.c:427] xfburn_device_fillin_libburn_info(): libburn will determine BD support based on the disk in the drive
DBG[xfburn-device.c:435] xfburn_device_fillin_libburn_info(): TSSTcorp BDDVDW SE-506AB can burn: 1 [cdr: 1, cdrw: 1, dvdr: 1, dvdram: 1]
DBG[xfburn-device-list.c:310] get_libburn_device_list(): Done
DBG[xfburn-device.c:347] refresh_disc(): disc_status = 2
DBG[xfburn-device.c:353] refresh_disc(): profile_no = 0x0 (), NOT erasable
** Message: Using gstreamer transcoder.
DBG[xfburn-audio-composition.c:997] action_add_selected_files(): selected  files: /home/casa/Musica/file01.mp3
 
DBG[xfburn-transcoder-gst.c:782] get_audio_track(): Querying GST about /home/casa/Musica/file01.mp3
DBG[xfburn-transcoder-gst.c:813] get_audio_track(): Track length =   32 secs => size =   5782039 bytes =>  2459 sectors

(xfburn:8241): GLib-GObject-WARNING **: invalid cast from 'GstDiscoverer' to 'GstObject'