diff --git a/ephemera.sc b/ephemera.sc
index 97da937..b198446 100644
--- a/ephemera.sc
+++ b/ephemera.sc
@@ -52,8 +52,8 @@ if ( ~now.year == 1970,
     ~file = ~sources.choose;
     ~file.postln;
 
-    // cue file form disk then play
-	b=Buffer.cueSoundFile (s, ~prefix++~file); ~play1.value(b);
+    // cue mono file from disk then play
+	b=Buffer.cueSoundFile (server: s, path: ~prefix++~file, numChannels, 1); ~play1.value(b);
 };
 
 ~foreground = {