diff --git a/README.md b/README.md
index 4ee7998..4620a25 100644
--- a/README.md
+++ b/README.md
@@ -160,6 +160,7 @@ If you'd like to modify the code and contribute to development, you can [downloa
 ```bash
 # Go to the directory where you extracted the repository and run:
 pip install -e .      # Installs the package in editable mode
+pip install build     # Install the build package
 python -m build       # Builds the package in dist folder (optional)
 abogen                # Opens the GUI
 ```
diff --git a/abogen/gui.py b/abogen/gui.py
index 8587a63..f7be737 100644
--- a/abogen/gui.py
+++ b/abogen/gui.py
@@ -1480,8 +1480,11 @@ class abogen(QWidget):
             lang = self.selected_voice[0]
             voice = self.selected_voice
 
+        # use same gpu/cpu logic as in conversion
+        gpu_msg, gpu_ok = get_gpu_acceleration(self.use_gpu)
+
         self.preview_thread = VoicePreviewThread(
-            np_module, kpipeline_class, lang, voice, speed, self.use_gpu
+            np_module, kpipeline_class, lang, voice, speed, gpu_ok 
         )
         self.preview_thread.finished.connect(self._play_preview_audio)
         self.preview_thread.error.connect(self._preview_error)
@@ -1545,7 +1548,12 @@ class abogen(QWidget):
 
     def _preview_cleanup(self):
         self.preview_playing = False
-        self.btn_preview.setIcon(self.play_icon)
+        self.loading_movie.stop()
+        try:
+            self.loading_movie.frameChanged.disconnect()
+        except Exception:
+            pass  # Ignore error if not connected
+        self.btn_preview.setIcon(self.play_icon) 
         self.btn_preview.setToolTip("Preview selected voice")
         self.btn_preview.setEnabled(True)
         self.voice_combo.setEnabled(True)