Added copyright information on test/sample.wav; the mystery is solved! :)
diff --git a/test/README b/test/README
index 6ce3616..179b28a 100644
--- a/test/README
+++ b/test/README
@@ -29,3 +29,21 @@ These are test programs for the SDL library:
controllermap Useful to generate Game Controller API compatible maps
+
+This directory contains sample.wav, which is a sample from Will Provost's
+song, The Living Proof:
+
+ From the album The Living Proof
+ Publisher: 5 Guys Named Will
+ Copyright 1996 Will Provost
+
+You can get a copy of the full song (and album!) from iTunes...
+
+ https://itunes.apple.com/us/album/the-living-proof/id4153978
+
+or Amazon...
+
+ http://www.amazon.com/The-Living-Proof-Will-Provost/dp/B00004R8RH
+
+Thanks to Will for permitting us to distribute this sample with SDL!
+