yes you had the recording volume too high, and it
caused clipping and distortion on the recorded medium.
next time you record, try to record so that the volume never
goes over unity i.e. goes over 0 db on the volume meter.
If it sounds quiet to you while MONITORING turn of the
volume of the MONITOR, NOT the input volume or recording volume.
I'm looking at the file in wavelab, and, even though the peak
volume is about -1 db, there is hardly ANY dynamic range
in this recording, it's all at the same volume through out
the whole recording, even the noise and other junk in there,
so somewhere you have a messed up process compressing and limiting
the life out of your recording.
Peace.