Issue regarding zero audio injector board

[hassanabbas1]

Dear
please suggest me how can i resolve this issue while i configure zero audio injector board with raspberry pi
and if possible please send me data sheet and user manual of this board also
pi@raspberrypi:~ $ sudo su
root@raspberrypi:/home/pi# cd Downloads/usr/bin/
root@raspberrypi:/home/pi/Downloads/usr/bin# audioInjector-test.sh
play: no process found
arecord: no process found
Recording WAVE '/tmp/test.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo

Encoding: n/a
Channels: 2 @ 16-bit
Samplerate: 48000Hz
Replaygain: off
Duration: unknown

In:0.00% 00:00:00.00 [00:00:00.00] Out:0 [ | ] Clip:0 arecord: pcm_read:2103: read error: Input/output error
sox WARN wav: Premature EOF on .wav input file
Recording WAVE '/tmp/test.mic.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
play FAIL formats: can't open output file `default': snd_pcm_open error: Device or resource busy
play WARN alsa: Input/output error
play FAIL sox: `default' Device or resource busy: Operation not permitted
Done.
arecord: pcm_read:2103: read error: Input/output error
sox WARN wav: Premature EOF on .wav input file