我在shell中可以正常使用mplayer播放音乐。
但用crontab建立的定时任务却总是不能成功，请问下有人知道该如何解决吗？
环境变量的问题的话，是不是加上
我有加，可是依然没效果 。日志输出结果如下

==========================================================================
Opening audio decoder: [mpg123] MPEG 1.0/2.0/2.5 layers I, II, III
AUDIO: 48000 Hz, 2 ch, s16le, 320.0 kbit/20.83% (ratio: 40000->192000)
Selected audio codec: [mpg123] afm: mpg123 (MPEG 1.0/2.0/2.5 layers I, II, III)
==========================================================================
shm_open() failed: No such file or directory
AO: [pulse] Init failed: Protocol error
Failed to initialize audio driver 'pulse'
shm_open() failed: No such file or directory
[AO_ALSA] alsa-lib: pulse.c:243pulse_connect) PulseAudio: Unable to connect: Protocol error

[AO_ALSA] Playback open error: Connection refused
Failed to initialize audio driver 'alsa'
[AO SDL] Samplerate: 48000Hz Channels: Stereo Format s16le
[AO SDL] using aalib audio driver.
[AO SDL] Unable to open audio: No available audio device
Failed to initialize audio driver 'sdl:aalib'
Could not open/initialize audio device -> no sound.
Audio: no sound
Video: no video


Exiting... (End of file)