add player script and fix bug

data.py

@@ -6,7 +6,15 @@ import mlflow
 
 SAMPLE_RATE = 22050
 
-#@mlflow.trace
+def spec_to_audio(spec):
+    """
+    Convert a normalized mel-spectrogram back to audio.
+    """
+    spec = (spec * 80) - 80
+    spec = librosa.db_to_amplitude(spec)*80
+    audio = librosa.feature.inverse.mel_to_audio(spec,sr=SAMPLE_RATE)
+    return audio
+
 def process_file(file_path):
     """
     Load 10 second chunks single song.