diff --git a/.gitignore b/.gitignore
index dbbe04d..5080d44 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,13 @@
+# Ignore Python bytecode cache files
+__pycache__/
+
+# Ignore pytest cache
+.pytest_cache/
+
+# Ignore virtual environment folder
 venv/
-samples/
+
+# Ignore other common files
+*.pyc
+*.pyo
+*.pyd
diff --git a/pytest.ini b/pytest.ini
new file mode 100644
index 0000000..ad5c7cc
--- /dev/null
+++ b/pytest.ini
@@ -0,0 +1,2 @@
+[pytest]
+pythonpath = . src
diff --git a/requirements.txt b/requirements.txt
index e69de29..5b77076 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -0,0 +1,28 @@
+audioread==3.0.1
+certifi==2024.12.14
+cffi==1.17.1
+charset-normalizer==3.4.0
+decorator==5.1.1
+idna==3.10
+iniconfig==2.0.0
+joblib==1.4.2
+lazy_loader==0.4
+librosa==0.10.2.post1
+llvmlite==0.43.0
+msgpack==1.1.0
+numba==0.60.0
+numpy==2.0.2
+packaging==24.2
+platformdirs==4.3.6
+pluggy==1.5.0
+pooch==1.8.2
+pycparser==2.22
+pytest==8.3.4
+requests==2.32.3
+scikit-learn==1.6.0
+scipy==1.14.1
+soundfile==0.12.1
+soxr==0.5.0.post1
+threadpoolctl==3.5.0
+typing_extensions==4.12.2
+urllib3==2.3.0
diff --git a/samples/cafe_crowd_talk.aiff b/samples/cafe_crowd_talk.aiff
new file mode 100644
index 0000000..80b6507
Binary files /dev/null and b/samples/cafe_crowd_talk.aiff differ
diff --git a/samples/unsupported_file.txt b/samples/unsupported_file.txt
new file mode 100644
index 0000000..e69de29
diff --git a/src/input/file_reader.py b/src/input/file_reader.py
index e69de29..f18b7e1 100644
--- a/src/input/file_reader.py
+++ b/src/input/file_reader.py
@@ -0,0 +1,21 @@
+import os
+import librosa
+
+def read_audio(file_path):
+    """
+    Reads an audio file and returns the audio time series and sampling rate.
+
+    Args:
+        file_path (str): Path to the audio file.
+
+    Returns:
+        tuple: audio_time_series (numpy.ndarray), sampling_rate (int)
+    """
+
+    if not os.path.exists(file_path):
+        raise FileNotFoundError(f"File not found: {file_path}")
+    try:
+        audio, sr = librosa.load(file_path, sr=None) # Load with original sampling rate.
+        return audio, sr
+    except Exception as e:
+        raise RuntimeError(f"Error reading the audio file: {e}")
\ No newline at end of file
diff --git a/src/input/format_checker.py b/src/input/format_checker.py
index e69de29..65d4ebb 100644
--- a/src/input/format_checker.py
+++ b/src/input/format_checker.py
@@ -0,0 +1,15 @@
+import mimetypes
+
+def is_supported_format(file_path):
+    """
+    Checks if the audio file is in a supported format.
+
+    Args:
+        file_path (str): Path to the audio file.
+
+    Returns:
+        bool: True if supported, False otherwise.
+    """
+    supported_formats = ["audio/mpeg", "audio/wav", "audio/x-aiff", "audio/x-wav", ...]
+    mime_type, _ = mimetypes.guess_type(file_path)
+    return mime_type in supported_formats
diff --git a/tests/test_input.py b/tests/test_input.py
new file mode 100644
index 0000000..afb4ff0
--- /dev/null
+++ b/tests/test_input.py
@@ -0,0 +1,13 @@
+import pytest
+from  src.input.file_reader import read_audio
+from src.input.format_checker import is_supported_format
+
+def test_read_audio():
+    file_path = "samples/cafe_crowd_talk.aiff"
+    audio, sr = read_audio(file_path)
+    assert len(audio) > 0
+    assert sr > 0
+
+def test_is_supported_format():
+    assert is_supported_format("samples/cafe_crowd_talk.aiff") == True
+    assert is_supported_format("samples/unsupported_file.txt") == False
\ No newline at end of file