Print usage error message to stderr.

diff --git a/fa-flacd b/fa-flacd
index 371f20b..c9ba090 100755 (executable)
--- a/fa-flacd
+++ b/fa-flacd
@@ -196,7 +196,7 @@ MAIN: {
     $opts{'j'} = 4;
     $opts{'v'} = 0;
     if (not getopts('j:v', \%opts)) {
-        print("usage: flacd [-jN -v]\n");
+        print(STDERR "usage: flacd [-jN -v]\n");
         exit(2);
     }