我正在尝试从示例中运行 streamutil.c 和 playfile，但在运行它们时出现错误。在运行 streamutil 时，我收到此错误：
19:07:43.822 os_core_unix.c !pjlib 2.1 for POSIX initialized
PJLIB INIT COMPLETE
19:07:43.825 pa_dev.c PortAudio sound library initialized, status=0
19:07:43.825 pa_dev.c PortAudio host api count=1
19:07:43.825 pa_dev.c Sound device count=0
19:07:43.825 pjlib select() I/O Queue created (0x7c87b8)
a.out: ../src/pjmedia/codec.c:53: pjmedia_codec_param_clone: Assertion `pool && src' failed.
在运行播放文件时，我收到以下错误：
19:08:35.703 os_core_unix.c !pjlib 2.1 for POSIX initialized
19:08:35.705 pa_dev.c PortAudio sound library initialized, status=0
19:08:35.705 pa_dev.c PortAudio host api count=1
19:08:35.705 pa_dev.c Sound device count=0
19:08:35.706 pjlib select() I/O Queue created (0x13db7b8)
19:08:35.706 wav_player.c File player '/home/udit/pjsip/alarma.wav' created: samp.rate=22050, ch=1, bufsize=4KB, filesize=265KB
19:08:35.706 playfile.c Unable to open sound device: Unable to find default audio device (PJMEDIA_EAUD_NODEFDEV) [code=420006]
我进行了很多搜索并尝试了许多解决方案，但都没有奏效。我认为我的音频设备有问题，但音频设备很好（用 aplay-l 等命令检查）。请有人告诉我我应该怎么做才能让它运行。