diff --git a/CHANGELOG.md b/CHANGELOG.md
index a26885c..1d982a6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 - Now you can play the audio files while they are processing.
 - While generating audio files, now it directly writes to audio file instead of RAM, which significantly reduces memory usage and prevents memory outage issues.
 - Added a better logic for detecting chapters from the epub, mentioned by @jefro108 in #33
+- Added a new option: `Reset to default settings`, allowing users to reset all settings to their default values.
+- Added a new option: `Disable Kokoro's internet access`. This lets you prevent Kokoro from downloading models or voices from HuggingFace Hub, which can help avoid long waiting times if your computer is offline.
+- HuggingFace Hub telemetry is now disabled by default for improved privacy. (HuggingFace Hub is used by Kokoro to download its models)
 - Potential fix for #37 and #38, where the program was becoming slow while processing large files.
 - Fixed `Open folder` and `Open file` buttons in the queue manager GUI.
 - Improvements in code structure.
diff --git a/README.md b/README.md
index 95cf045..ebdf5fc 100644
--- a/README.md
+++ b/README.md
@@ -153,6 +153,8 @@ Here’s Abogen in action: in this demo, it processes ∼3,000 characters of tex
 | **Open temp directory** | Opens the temporary directory where converted text files are stored. |
 | **Clear temporary files** | Deletes temporary files created during the conversion or preview. |
 | **Check for updates at startup** | Automatically checks for updates when the program starts. |
+| **Disable Kokoro's internet access** | Prevents Kokoro from downloading models or voices from HuggingFace Hub, useful for offline use. |
+| **Reset to default settings** | Resets all settings to their default values. |
 
 ## `Voice Mixer`
 <img title="Abogen Voice Mixer" src='https://raw.githubusercontent.com/denizsafak/abogen/refs/heads/main/demo/voice_mixer.png'>
diff --git a/abogen/conversion.py b/abogen/conversion.py
index 596d83e..a8da622 100644
--- a/abogen/conversion.py
+++ b/abogen/conversion.py
@@ -474,7 +474,7 @@ class ConversionThread(QThread):
                     merged_out_file = sf.SoundFile(merged_out_path, "w", samplerate=24000, channels=1, format=self.output_format)
                     ffmpeg_proc = None
                 elif self.output_format == "m4b":
-                    temp_wav_path = f"{base_filepath_no_ext}_temp.wav"
+                    temp_wav_path = os.path.join(out_dir, f"temp_{base_name}{suffix}.wav")
                     merged_out_file = sf.SoundFile(temp_wav_path, "w", samplerate=24000, channels=1, format="wav")
                     ffmpeg_proc = None
                 elif self.output_format == "opus":
diff --git a/abogen/gui.py b/abogen/gui.py
index 52d4c4d..e433788 100644
--- a/abogen/gui.py
+++ b/abogen/gui.py
@@ -2774,6 +2774,15 @@ class abogen(QWidget):
         # Add seperator"
         menu.addSeparator()
 
+        # Add "Disable Kokoro's internet access" option
+        disable_kokoro_action = QAction("Disable Kokoro's internet access", self)
+        disable_kokoro_action.setCheckable(True)
+        disable_kokoro_action.setChecked(self.config.get("disable_kokoro_internet", False))
+        disable_kokoro_action.triggered.connect(
+            lambda checked: self.toggle_kokoro_internet_access(checked)
+        )
+        menu.addAction(disable_kokoro_action)
+
         # Add check for updates option
         check_updates_action = QAction("Check for updates at startup", self)
         check_updates_action.setCheckable(True)
@@ -2781,6 +2790,11 @@ class abogen(QWidget):
         check_updates_action.triggered.connect(self.toggle_check_updates)
         menu.addAction(check_updates_action)
 
+        # Add "Reset to default settings" option
+        reset_defaults_action = QAction("Reset to default settings", self)
+        reset_defaults_action.triggered.connect(self.reset_to_default_settings)
+        menu.addAction(reset_defaults_action)
+
         # Add about action
         about_action = QAction("About", self)
         about_action.triggered.connect(self.show_about_dialog)
@@ -2793,6 +2807,50 @@ class abogen(QWidget):
         self.config["replace_single_newlines"] = enabled
         save_config(self.config)
 
+    def toggle_kokoro_internet_access(self, disabled):
+        reply = QMessageBox.question(
+            self,
+            "Restart Required",
+            "Changing Kokoro's internet access requires restarting the application.\nDo you want to continue?",
+            QMessageBox.Yes | QMessageBox.No,
+            QMessageBox.No,
+        )
+        if reply == QMessageBox.Yes:
+            self.config["disable_kokoro_internet"] = disabled
+            save_config(self.config)
+            try:
+                from PyQt5.QtCore import QProcess
+                import sys
+                QProcess.startDetached(sys.executable, sys.argv)
+                QApplication.quit()
+            except Exception as e:
+                QMessageBox.critical(
+                    self,
+                    "Restart Failed",
+                    f"Failed to restart the application:\n{e}"
+                )
+
+    def reset_to_default_settings(self):
+        reply = QMessageBox.question(
+            self,
+            "Reset Settings",
+            "This will reset all settings to their default values and restart the application.\nDo you want to continue?",
+            QMessageBox.Yes | QMessageBox.No,
+            QMessageBox.No,
+        )
+        if reply == QMessageBox.Yes:
+            from abogen.utils import get_user_config_path
+            import sys
+            config_path = get_user_config_path()
+            try:
+                if os.path.exists(config_path):
+                    os.remove(config_path)
+                from PyQt5.QtCore import QProcess
+                QProcess.startDetached(sys.executable, sys.argv)
+                QApplication.quit()
+            except Exception as e:
+                QMessageBox.critical(self, "Reset Error", f"Could not reset settings:\n{e}")
+
     def reveal_config_in_explorer(self):
         """Open the configuration file location in file explorer."""
         from abogen.utils import get_user_config_path
diff --git a/abogen/main.py b/abogen/main.py
index 6933249..3e94a31 100644
--- a/abogen/main.py
+++ b/abogen/main.py
@@ -1,3 +1,4 @@
+from json import load
 import os
 import sys
 import platform
@@ -7,8 +8,19 @@ from PyQt5.QtCore import qInstallMessageHandler, QtMsgType
 
 # Add the directory to Python path
 sys.path.insert(0, os.path.join(os.path.dirname(__file__)))
+
+from abogen.utils import get_resource_path, load_config
+
+# Set Hugging Face Hub environment variables
+os.environ["HF_HUB_DISABLE_TELEMETRY"] = "1"    # Disable Hugging Face telemetry
+os.environ["HF_HUB_ETAG_TIMEOUT"] = "10"        # Metadata request timeout (seconds)
+os.environ["HF_HUB_DOWNLOAD_TIMEOUT"] = "10"    # File download timeout (seconds)
+os.environ["HF_HUB_DISABLE_SYMLINKS_WARNING"] = "1"  # Disable symlinks warning
+if load_config().get("disable_kokoro_internet", False):
+    print("INFO: Kokoro's internet access is disabled.")
+    os.environ["HF_HUB_OFFLINE"] = "1"  # Disable Hugging Face Hub internet access
+
 from abogen.gui import abogen
-from abogen.utils import get_resource_path
 from abogen.constants import PROGRAM_NAME, VERSION
 
 # Set environment variables for AMD ROCm
diff --git a/abogen/utils.py b/abogen/utils.py
index 8c32c33..1a88a00 100644
--- a/abogen/utils.py
+++ b/abogen/utils.py
@@ -7,11 +7,8 @@ import subprocess
 import re
 from threading import Thread
 
-# suppress warnings and disable HF hub symlink warnings
-os.environ["HF_HUB_DISABLE_SYMLINKS_WARNING"] = "1"
 warnings.filterwarnings("ignore")
 
-
 def get_resource_path(package, resource):
     """
     Get the path to a resource file, with fallback to local file system.