diff --git a/tests/test_audio.py b/tests/test_audio.py
index 642af2ea..a3057f4e 100644
--- a/tests/test_audio.py
+++ b/tests/test_audio.py
@@ -14,5 +14,6 @@ def before_all() -> None:
 
 def test_get_audio_frame() -> None:
 	pass
+	# todo: testing
 	#assert get_audio_frame('.assets/examples/source.mp3', 25) is not None
 	#assert get_audio_frame('invalid', 25) is None
diff --git a/tests/test_ffmpeg.py b/tests/test_ffmpeg.py
index 55a6bcb4..6f179357 100644
--- a/tests/test_ffmpeg.py
+++ b/tests/test_ffmpeg.py
@@ -5,7 +5,7 @@ import pytest
 import facefusion.globals
 from facefusion.filesystem import get_temp_directory_path, create_temp, clear_temp
 from facefusion.download import conditional_download
-from facefusion.ffmpeg import extract_frames
+from facefusion.ffmpeg import extract_frames# #read_audio_buffer, replace_audio
 
 
 @pytest.fixture(scope = 'module', autouse = True)
@@ -13,8 +13,10 @@ def before_all() -> None:
 	conditional_download('.assets/examples',
 	[
 		'https://github.com/facefusion/facefusion-assets/releases/download/examples/source.jpg',
+		'https://github.com/facefusion/facefusion-assets/releases/download/examples/source.mp3',
 		'https://github.com/facefusion/facefusion-assets/releases/download/examples/target-240p.mp4'
 	])
+	subprocess.run([ 'ffmpeg', '-i', '.assets/examples/source.mp3', '.assets/examples/source.wav' ])
 	subprocess.run([ 'ffmpeg', '-i', '.assets/examples/target-240p.mp4', '-vf', 'fps=25', '.assets/examples/target-240p-25fps.mp4' ])
 	subprocess.run([ 'ffmpeg', '-i', '.assets/examples/target-240p.mp4', '-vf', 'fps=30', '.assets/examples/target-240p-30fps.mp4' ])
 	subprocess.run([ 'ffmpeg', '-i', '.assets/examples/target-240p.mp4', '-vf', 'fps=60', '.assets/examples/target-240p-60fps.mp4' ])
@@ -98,3 +100,18 @@ def test_extract_frames_with_trim_end() -> None:
 		assert len(glob.glob1(temp_directory_path, '*.jpg')) == frame_total
 
 		clear_temp(target_path)
+
+
+def test_read_audio_buffer() -> None:
+	# todo: testing
+	pass
+	# todo: if you can use different values, then test not just against None or not None
+	#assert read_audio_buffer('.assets/examples/source.mp3', 1, 1) is not None
+	#assert read_audio_buffer('.assets/examples/source.wav', 1, 1) is not None
+	#assert read_audio_buffer('.assets/examples/invalid.mp3', 1, 1) is None
+
+
+def test_replace_audio() -> None:
+	# todo: testing
+	# todo: question: does this work with trim start and trim end?
+	pass