I'm on Linux 18.1. 
I ran httrack <https://www.supremecourt.gov/oral_arguments/argument_audio/2016>
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There is an index.html and a hts-cache folder in the directory 
A site may have been mirrored here, that could mean that you want to update
it
Be sure parameters are ok

Press <Y><Enter> to confirm, <N><Enter> to abort
y
Mirror launched on Mon, 24 Apr 2017 13:32:35 by HTTrack Website Copier/3.48-21
[XR&CO'2014]
mirroring <https://www.supremecourt.gov/oral_arguments/argument_audio/2016> with
the wizard help..
* <https://www.supremecourt.gov/oral_arguments/argument_audio/2016> (55031
bytes) 2/3: <https://www.supremecourt.gov/oral_arguments/argument_audio/2016>
(55031 byte* <https://www.supremecourt.gov/oral_arguments/argument_audio/2015>
(55602 bytes) *
<https://www.supremecourt.gov/oral_arguments/argument_audio/2014> (60011 bytes)
* <https://www.supremecourt.gov/oral_arguments/argument_audio/2013> (60349
bytes) * <https://www.supremecourt.gov/oral_arguments/argument_audio/2012>
(62407 bytes) *
<https://www.supremecourt.gov/oral_arguments/argument_audio/2011> (61138 bytes)
3/9: <https://www.supremecourt.gov/oral_arguments/argument_audio/2015> (55602
byte4/9: <https://www.supremecourt.gov/oral_arguments/argument_audio/2014>
(60011 byte5/9:
<https://www.supremecourt.gov/oral_arguments/argument_audio/2013> (60349
byte6/9: <https://www.supremecourt.gov/oral_arguments/argument_audio/2012>
(62407 byte7/9:
<https://www.supremecourt.gov/oral_arguments/argument_audio/2011> (61138 byte*
<https://www.supremecourt.gov/oral_arguments/argument_audio/2010> (63856 bytes)
8/9: <https://www.supremecourt.gov/oral_arguments/argument_audio/2010> (63856
byteDone.OK
Thanks for using HTTrack!
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how come I didn't get an "interview" of what I wanted as part of the
copy/download?
What I want is to download the webpages on
<https://www.supremecourt.gov/oral_arguments/audio/2016/>*, and the correponding
PDFs and the MP3s.