I have this file, but want to tell people where to get it. I may have
abbreviated the filename after I downloaded it, but I'm sure that it
had "aroy" in it. Please find it for me.

It is an interview with Arundhati Roy, about 28 minutes, and 26,273KB.
There are several interviews with her out there, but this one mentions
her new book, War Talk, in the first minute of the interview.

I believe I have located the file you seek. This interview with
Arundhati Roy was conducted by Christopher Lydon. The file, named
"aroy.mp3", is 28.1 minutes long, and "War Talk" is mentioned at the
beginning of the interview.

The Whole Wide World with Christopher Lydon
http://world.law.harvard.edu/show7add.html

Here's a link to the file itself:

Berkman Center for Internet & Society at Harvard Law School
http://cyber.law.harvard.edu/ml/output.pl/35030/download/aroy.mp3

This was the search string that led me to the file:

Google Web Search: "arundhati roy" + "war talk" + "mp3"
://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=+%22arundhati+roy%22+%22war+talk%22+mp3

If this is not the correct file, please request clarification; I'll be
glad to offer further assistance before you rate my answer.

Best wishes,
pinkfreud