Pulsesink: "Got Underflow"

[Cole Bush]

Hello,

I am using an external soundcard for my input and output for a gstreamer
application. As a starting point I am running the pipeline:

gst-launch-1.0 -v pulsesrc volume=1.0 ! pulsesink       with GST_DEBUG=2.

This keeps spamming a warning that says:
 .... WARN     pulse
pulsesink.c:702:gst_pulsering_stream_underflow_cb:<pulsesink0> Got underflow

I haven't been able to figure out what this means exactly. The signal is
coming from an aux cord connected to my mp3 player. I can hear what is
playing if i turn up the different volumes a lot, so i am guessing this
means the signal isn't quite strong enough. Is there a way to fix this via
software or is it more likely a hardware problem?

Thanks for any insight!
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