I found a way to mount a cd.iso file. But the iso is not really marked as audio cd.... It's just a data cd with .wav files as content.
I mounted is by my dream with :
mount supertramp.iso /media/sr -t iso9660 -o loop
After that I created a sr map in media. then created a location.
Playing then is ok but it's actually a loop device.
playing 4097:0:0:0:0:0:0:0:0:0:/media/sr/Track 1.wav
< 94496.253193> [eDVBCAService] free slot 0 demux 0 for service 1:0:1:10E0:418:1:C00000:0:0:0:
< 94496.253592> [eDVBCAService] free service 1:0:1:10E0:418:1:C00000:0:0:0:
< 94496.291701> [eTSMPEGDecoder] decoder state: play, vpid=ffffffff, apid=ffffffff
< 94496.292180> [eDVBPCR0] DEMUX_STOP ok
< 94496.292761> [eDVBPCR0] destroy
< 94496.292933> [eDVBVideo0] DEMUX_STOP ok
< 94496.294337> [eDVBVideo0] VIDEO_STOP ok
< 94496.294820> [eDVBVideo0] destroy
< 94496.295582> [eDVBAudio0] AUDIO_STOP ok
< 94496.315049> [eDVBAudio0] DEMUX_STOP ok
< 94496.315464> [eDVBAudio0] AUDIO_CONTINUE ok
< 94496.316178> [eDVBAudio0] destroy
< 94496.316470> [eDVBText0] DEMUX_STOP ok
TuxTxt stopped service 28
< 94496.324310> [eDVBText0] destroy
cleaning up
TuxTxt cache cleared
< 94496.336184> [eDVBResourceManager] start release channel timer
< 94496.340960> [eServiceMP3] construct!
< 94496.341735> [eServiceMP3] playbin uri=file:///media/sr/Track%201.wav
< 94496.404152> [eServiceMP3] starting pipeline
< 94496.527456> [eDVBDB] getBouquet failed.. no path given!
< 94496.541372> [eDVBDB] getBouquet failed.. no path given!
< 94496.552730> [eServiceMP3] no cue sheet
< 94496.565074> [eServiceMP3] state transition NULL -> READY
< 94496.716327> [eServiceMP3] gst_element_query_position failed in getPlayPosition
< 94496.720252> [eServiceMP3] gst_element_query_position failed in getPlayPosition
< 94496.722774> [eServiceMP3] gst_element_query_position failed in getPlayPosition
< 94496.725323> [eServiceMP3] gst_element_query_position failed in getPlayPosition
< 94496.729537> [eServiceMP3] gst_element_query_position failed in getPlayPosition
0:00:59.457934359 9957 0x7421f6c0 INFO dvbaudiosink gstdvbaudiosink.c:1463:gst_dvbaudiosink_change_state:<audiosink-actual-sink-dvbaudio> GST_STATE_CHANGE_NULL_TO_READY
0:00:59.578990544 9957 0x7421f6c0 INFO dvbaudiosink gstdvbaudiosink.c:1477:gst_dvbaudiosink_change_state:<audiosink-actual-sink-dvbaudio> GST_STATE_CHANGE_READY_TO_PAUSED
0:00:59.594619693 9957 0x207a350 INFO dvbaudiosink gstdvbaudiosink.c:701:gst_dvbaudiosink_event:<audiosink-actual-sink-dvbaudio> EVENT stream-start
0:00:59.693116062 9957 0x207a350 INFO dvbaudiosink gstdvbaudiosink.c:701:gst_dvbaudiosink_event:<audiosink-actual-sink-dvbaudio> EVENT caps
0:00:59.694825285 9957 0x207a350 INFO dvbaudiosink gstdvbaudiosink.c:669:gst_dvbaudiosink_set_caps:<audiosink-actual-sink-dvbaudio> MIMETYPE audio/x-raw
0:00:59.695096507 9957 0x207a350 INFO dvbaudiosink gstdvbaudiosink.c:679:gst_dvbaudiosink_set_caps:<audiosink-actual-sink-dvbaudio> setting dvb mode 0x0f
0:00:59.708772990 9957 0x207a350 INFO dvbaudiosink gstdvbaudiosink.c:701:gst_dvbaudiosink_event:<audiosink-actual-sink-dvbaudio> EVENT segment
0:00:59.709071878 9957 0x207a350 INFO dvbaudiosink gstdvbaudiosink.c:803:gst_dvbaudiosink_event:<audiosink-actual-sink-dvbaudio> GST_EVENT_SEGMENT rate=1.000000 format=3 start=0 position=0
0:00:59.709577138 9957 0x207a350 INFO dvbaudiosink gstdvbaudiosink.c:804:gst_dvbaudiosink_event:<audiosink-actual-sink-dvbaudio> SEGMENT DVB TIMESTAMP=0 HEX=0x0
0:00:59.711003062 9957 0x207a350 INFO dvbaudiosink gstdvbaudiosink.c:701:gst_dvbaudiosink_event:<audiosink-actual-sink-dvbaudio> EVENT tag
0:00:59.711367395 9957 0x207a350 INFO dvbaudiosink gstdvbaudiosink.c:848:gst_dvbaudiosink_event:<audiosink-actual-sink-dvbaudio> TAG taglist, audio-codec=(string)"Uncompressed\ 16-bit\ PCM\ audio", encoder=(string)"gvfs-cdda\ using\ libcdio\ 0.83\ x86_64-pc-linux-gnu";
< 94497.187783> [eServiceMP3] state transition READY -> PAUSED
< 94497.192139> [eServiceMP3] dont apply ac3 delay when no video is running!
< 94497.193188> [eServiceMP3] dont apply pcm delay when no video is running!
< 94497.193538> [eServiceMP3] no cue sheet create cue sheet now
< 94497.194186> [eServiceMP3] cutfile not found!
0:00:59.739021914 9957 0x74228230 INFO dvbaudiosink gstdvbaudiosink.c:1508:gst_dvbaudiosink_change_state:<audiosink-actual-sink-dvbaudio> GST_STATE_CHANGE_PAUSED_TO_PLAYING
< 94497.194896> [eServiceMP3] cutlists were disabled
< 94497.224835> [eServiceMP3] async-done - 0 video, 1 audio, 0 subtitle
< 94497.225783> [eServiceMP3] AUDIO STRUCT=audio/x-raw
< 94497.226723> [eServiceMP3] audio stream=0 codec=Uncompressed 16-bit PCM audio language=und
< 94497.256772> [eServiceMP3] state transition PAUSED -> PLAYING