I want to play udp streams with mplayer,but not successful.Vlc works fine in WinXP SP2. ./mplayer -v udp://224.0.0.1:1234 This is the detail log info bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) MPlayer SVN-r1.0~rc3+svn20090426-4.4.3 (C) 2000-2009 MPlayer Team mplayer: could not connect to socket mplayer: No such file or directory Failed to open LIRC support. You will not be able to use your remote control. Playing udp://239.255.1.9:8001. STREAM_UDP, URL: udp://239.255.1.9:8001 IP_ADD_MEMBERSHIP failed (do you have multicasting enabled in your kernel?) udp_streaming_start failed No stream found to handle url udp://239.255.1.9:8001 Exiting... (End of file) Does mplayer use IGMPv3 or other version?How can I figure it out? Thanks.