1 files changed, 9 insertions, 1 deletions
diff --git a/src/audio/tracker.cc b/src/audio/tracker.cc
index 95b8022..a511a62 100644
--- a/src/audio/tracker.cc
+++ b/src/audio/tracker.cc
@@ -255,9 +255,17 @@ static int get_free_pool_slot() {
   }
 
   // If all slots are active, reuse the oldest one (round-robin)
-  // This automatically handles cleanup of old patterns
+  // Clean up the old slot before reuse
   const int slot = g_next_pool_slot;
   g_next_pool_slot = (g_next_pool_slot + 1) % MAX_SPECTROGRAMS;
+
+  if (g_spec_pool[slot].synth_id >= 0) {
+    synth_unregister_spectrogram(g_spec_pool[slot].synth_id);
+  }
+  delete[] g_spec_pool[slot].data;
+  g_spec_pool[slot].data = nullptr;
+  g_spec_pool[slot].synth_id = -1;
+  g_spec_pool[slot].active = false;
   return slot;
 }