diff --git a/VERSION.txt b/VERSION.txt
index 2d25c0e4..9bf1082b 100644
--- a/VERSION.txt
+++ b/VERSION.txt
@@ -1 +1 @@
-25.3.22
\ No newline at end of file
+25.4.25
\ No newline at end of file
diff --git a/ebook2audiobook.cmd b/ebook2audiobook.cmd
index 472cb131..4be2d54f 100755
--- a/ebook2audiobook.cmd
+++ b/ebook2audiobook.cmd
@@ -16,7 +16,7 @@ set "PYTHONUTF8=1"
 set "PYTHONIOENCODING=utf-8"
 set "CURRENT_ENV="
 
-set "PROGRAMS_LIST=calibre-normal-cjk ffmpeg nodejs espeak-ng sox"
+set "PROGRAMS_LIST=calibre-normal ffmpeg nodejs espeak-ng sox"
 
 set "TMP=%SCRIPT_DIR%\tmp"
 set "TEMP=%SCRIPT_DIR%\tmp"
@@ -64,6 +64,7 @@ where /Q scoop
 if %errorlevel% neq 0 (
 	echo Scoop is not installed. 
 	set "SCOOP_CHECK=1"
+	goto install_components
 )
 goto conda_check
 exit /b
@@ -74,7 +75,7 @@ if %errorlevel% neq 0 (
 	call rmdir /s /q "%CONDA_INSTALL_DIR%" 2>nul
 	echo Miniforge3 is not installed. 
 	set "CONDA_CHECK=1"
-	goto programs_check
+	goto install_components
 )
 :: Check if running in a Conda environment
 if defined CONDA_DEFAULT_ENV (
@@ -110,7 +111,7 @@ set "missing_prog_array="
 for %%p in (%PROGRAMS_LIST%) do (
     set "prog=%%p"
     if "%%p"=="nodejs" set "prog=node"
-	if "%%p"=="calibre-normal-cjk" set "prog=calibre"
+	if "%%p"=="calibre-normal" set "prog=calibre"
     where /Q !prog!
     if !errorlevel! neq 0 (
         echo %%p is not installed.
@@ -130,12 +131,6 @@ if not "%SCOOP_CHECK%"=="0" (
 	echo Installing Scoop...
     call powershell -command "Set-ExecutionPolicy RemoteSigned -scope CurrentUser"
     call powershell -command "iwr -useb get.scoop.sh | iex"
-	
-	where /Q scoop
-	if !errorlevel! neq 0 (
-		echo Scoop installation failed.
-		goto failed
-	)
 	call scoop install git
 	call scoop bucket add muggle https://github.com/hu3rror/scoop-muggle.git
 	call scoop bucket add extras
@@ -144,32 +139,8 @@ if not "%SCOOP_CHECK%"=="0" (
 	if "%PROGRAMS_CHECK%"=="0" (
 		set "SCOOP_CHECK=0"
 	)
-)
-:: Install missing packages one by one
-if not "%PROGRAMS_CHECK%"=="0" (
-    echo Installing missing programs...
-	if "%SCOOP_CHECK%"=="0" (
-		call scoop bucket add muggle b https://github.com/hu3rror/scoop-muggle.git
-		call scoop bucket add extras
-		call scoop bucket add versions
-	)
-    for %%p in (%missing_prog_array%) do (
-		call scoop install %%p
-		set "prog=%%p"
-		if "%%p"=="nodejs" (
-			set "prog=node"
-		)
-		if "%%p"=="calibre-normal-cjk" set "prog=calibre"
-		where /Q !prog!
-		if !errorlevel! neq 0 (
-			echo %%p installation failed...
-			goto failed
-		)
-    )
-	call powershell -command "[System.Environment]::SetEnvironmentVariable('Path', [System.Environment]::GetEnvironmentVariable('Path', 'User') + '%SCOOP_SHIMS%;%SCOOP_APPS%;%CONDA_PATH%;%NODE_PATH%;', 'User')"
-	set "SCOOP_CHECK=0"
-    set "PROGRAMS_CHECK=0"
-    set "missing_prog_array="
+	start "" cmd /k cd /d "%CD%" ^& call "%~f0"
+	exit
 )
 :: Install Conda if not already installed
 if not "%CONDA_CHECK%"=="0" (
@@ -186,6 +157,34 @@ if not "%CONDA_CHECK%"=="0" (
 	del "%CONDA_INSTALLER%"
 	set "CONDA_CHECK=0"
 	echo Conda installed successfully.
+	start "" cmd /k cd /d "%CD%" ^& call "%~f0"
+	exit
+)
+:: Install missing packages one by one
+if not "%PROGRAMS_CHECK%"=="0" (
+    echo Installing missing programs...
+	if "%SCOOP_CHECK%"=="0" (
+		call scoop bucket add muggle b https://github.com/hu3rror/scoop-muggle.git
+		call scoop bucket add extras
+		call scoop bucket add versions
+	)
+    for %%p in (%missing_prog_array%) do (
+		call scoop install %%p
+		set "prog=%%p"
+		if "%%p"=="nodejs" (
+			set "prog=node"
+		)
+		if "%%p"=="calibre-normal" set "prog=calibre"
+		where /Q !prog!
+		if !errorlevel! neq 0 (
+			echo %%p installation failed...
+			goto failed
+		)
+    )
+	call powershell -command "[System.Environment]::SetEnvironmentVariable('Path', [System.Environment]::GetEnvironmentVariable('Path', 'User') + '%SCOOP_SHIMS%;%SCOOP_APPS%;%CONDA_PATH%;%NODE_PATH%;', 'User')"
+	set "SCOOP_CHECK=0"
+    set "PROGRAMS_CHECK=0"
+    set "missing_prog_array="
 )
 goto dispatch
 exit /b
diff --git a/lib/classes/tts_manager.py b/lib/classes/tts_manager.py
index 45197578..3689a300 100644
--- a/lib/classes/tts_manager.py
+++ b/lib/classes/tts_manager.py
@@ -321,7 +321,7 @@ class TTSManager:
         else:
             raise TypeError(f"Unsupported type for audio_data: {type(audio_data)}")
 
-    def _trim_end(self, audio_data, sample_rate, silence_threshold=0.001, buffer_seconds=0.001):
+    def _trim_end(self, audio_data, sample_rate, silence_threshold=0.010, buffer_seconds=0.010):
         # Ensure audio_data is a PyTorch tensor
         if isinstance(audio_data, list):  
             audio_data = torch.tensor(audio_data)  # Convert list to tensor
diff --git a/lib/functions.py b/lib/functions.py
index c700e045..4a0f390f 100644
--- a/lib/functions.py
+++ b/lib/functions.py
@@ -626,7 +626,7 @@ def get_chapters(epubBook, session):
 
 def get_sentences(text, lang):
     max_tokens = language_mapping[lang]['max_tokens']
-    max_chars = max_tokens * 10
+    max_chars = (max_tokens * 10) - 4
     pattern_split = [re.escape(p) for p in punctuation_split]
     pattern = f"({'|'.join(pattern_split)})"
 
diff --git a/pyproject.toml b/pyproject.toml
index 8d017467..5fd9868f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,7 +52,7 @@ dependencies = [
 	"torchvggish"
 ]
 readme = "README.md"
-requires-python = ">3.11,<3.13"
+requires-python = ">3.9,<3.13"
 classifiers = [
     "Programming Language :: Python :: 3",
     "License :: OSI Approved :: MIT License",
diff --git a/setup.py b/setup.py
index 7d383ca4..59126b60 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@ class PostInstallCommand(install):
 setup(
     name='ebook2audiobook',
     version=get_version(),
-    python_requires=">3.11,<3.13",
+    python_requires=">3.9,<3.13",
     author="Drew Thomasson",
     description="Convert eBooks to audiobooks with chapters and metadata",
     long_description=long_description,