diff --git a/src/cwtest/cfg/flow/flow_proc_dict.cfg b/src/cwtest/cfg/flow/flow_proc_dict.cfg
index 7f49fcc..5d2a735 100644
--- a/src/cwtest/cfg/flow/flow_proc_dict.cfg
+++ b/src/cwtest/cfg/flow/flow_proc_dict.cfg
@@ -50,7 +50,7 @@
       audio_split: {
          vars: {
 	   in:     { type:audio, flags:["src"], doc:"Audio input." },
-	   select: { type:int,                  doc:"Give a list of integers where each integer selects an output channel for the associated input channel." }
+	   select: { type:cfg,                  doc:"Give a list of integers where each integer selects an output channel for the associated input channel." }
 	   igain:  { type:coeff, value:1.0,     doc:"Audio gain for each input channel." }
 	   ogain:  { type:coeff, value:1.0,     doc:"Audio gain for each output channel." }
 	   out:    { type:audio,                doc:"Audio output." },
@@ -63,6 +63,7 @@
 	}
       }
 
+
       audio_duplicate: {
          vars: {
 	   in:        { type:audio, flags:["src"], doc:"Audio input."},
@@ -72,19 +73,13 @@
 	 }
       }
 
-      audio_merge: {
-         vars: {
-	   in0:  { type:audio, flags:["src"],            doc:"First audio input." },
-	   in1:  { type:audio, flags:["src"],            doc:"Second audio input." },
-	   in2:  { type:audio, flags:["src","src_opt"],  doc:"Third audio input." },
-	   in3:  { type:audio, flags:["src","src_opt"],  doc:"Fourth audio input." },
-	   in4:  { type:audio, flags:["src","src_opt"],  doc:"Fifth audio input." },
-	   in5:  { type:audio, flags:["src","src_opt"],  doc:"Sixth audio input." },
-	   in6:  { type:audio, flags:["src","src_opt"],  doc:"Seventh audio input." },
-	   in7:  { type:audio, flags:["src","src_opt"],  doc:"Eigth audio input." },
-	   gain: { type:coeff, value:1.0, doc:"Audio gain for each selected (output) channel." }
-	   out:  { type:audio,             doc:"Audio output. Channel count is the sum of the input channel count." },
-	 }
+     audio_merge: {     
+        vars: {
+	  in:       { type:audio,            flags:["src", "mult"], doc:"Audio input channel." },
+	  gain:     { type:coeff,  value: 1, flags:["src", "mult"], doc:"Input channel gain." },
+	  out_gain: { type:coeff,  value: 1,                        doc:"Output gain" },
+          out:      { type:audio,                                   doc:"Audio output. Channel count is the sum of the input channel count." },	
+	}
       }
 
       audio_mix: {
@@ -122,6 +117,7 @@
 	  a220 : { hz:220 },
 	  a440 : { hz:440 },
 	  a880 : { hz:880 },
+          mono:  { chCnt:1, gain:0.75 }
 	}
       }
 
@@ -622,16 +618,6 @@
 	}
       },
 
-      poly_merge: {
-	
-        vars: {
-	  in:       { type:audio,            flags:["src", "mult"], doc:"Audio input channel." },
-	  gain:     { type:coeff,  value: 0, flags:["src", "mult"], doc:"Input channel gain." },
-	  out_gain: { type:coeff,  value: 1,                        doc:"Output gain" },
-          out:      { type:audio,                                   doc:"Audio output." },	
-	}
-      },
-
       print: {
       	 vars: {
 	   in:     { type:all, flags:["mult"], doc: "Value to print." },