[AudioI] underrun error playing 8ch WAV

[z f]

hi there, this is my first post to the email list, not sure i'm doing this
right..

i'm trying to play an 8ch wav file in a loop, 16bit 44.1, and it usually
gives me an "underrun" error while playing the file at least once per
loop.  this translates to a minor blip for between 30ms and 800ms where
there is a jump in the audio.  the wav file continues to loop over and
over, but usually one or two underrun blips per loop.

i'm achieving the loop by doing this in terminal:

while [ 1 ] ; do aplay -D hw:audioinjectoroc
/home/pi/Downloads/herefull8.wav ; done

if anyone has any ideas i could try, let me know!  i'm using a Sandisk
ultra plus U1 microsd card on a raspberry pi 3B.

im brand new to rpi, everything i've done so far has been copying/pasting
stuff i see on the forums, or something someone has advised me to do, i
dont really understand this end of it, but all i need to do with the
raspberry pi is simply loop this file and i should be all set. i feel like
i'm very close!

thanks,
Zak
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