fix: use buffer.split() to access audio channels

Co-authored-by: aider (deepseek/deepseek-coder) <aider@aider.chat>

src/lib.rs

@@ -102,9 +102,10 @@ impl Plugin for ClipLauncher {
         }
 
         // Process audio
-        for channel_samples in buffer.iter_samples() {
-            let input = channel_samples.as_ref();
-            let output = channel_samples.as_mut();
+        let (inputs, mut outputs) = buffer.split();
+        for (input_channel, output_channel) in inputs.iter().zip(outputs.iter_mut()) {
+            let input = *input_channel;
+            let output = *output_channel;
             let num_samples = input.len();
             
             // Process this block