diff --git a/src/main.rs b/src/main.rs
index 8d15c3f..d5f426d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -18,11 +18,9 @@ fn main() {
     let rb = HeapRb::<f32>::new(128);
     let (mut prod, mut cons) = rb.split();
     let process_callback = move |_: &jack::Client, ps: &jack::ProcessScope| -> jack::Control {
-        let mut out_a_p = out_a.as_mut_slice(ps);
-        for v in cons.iter_mut() {
-            println!("{:?}", v);
-            out_a_p.fill(*v);
-        }
+        let out = out_a.as_mut_slice(ps);
+        let available = cons.pop_slice(out);
+        out[available..].fill(0.0);
         jack::Control::Continue
     };
     let process = jack::contrib::ClosureProcessHandler::new(process_callback);
@@ -42,7 +40,7 @@ fn main() {
     // 5. wait or do some processing while your handler is running in real time.
     println!("Enter an integer value to change the frequency of the sine wave.");
     while let Some(f) = read_freq() {
-        prod.try_push(f);
+        prod.try_push(1203.0).unwrap();
     }
 
     // 6. Optional deactivate. Not required since active_client will deactivate on