re-activate dia

requirements.txt

@@ -1,4 +1,4 @@
-streamlit>=1.31
+streamlit
 nltk>=3.8
 librosa>=0.10
 ffmpeg-python>=0.2
@@ -12,4 +12,4 @@ soundfile>=0.13.0
 kokoro>=0.7.9
 ordered-set>=4.1.0
 phonemizer-fork>=3.3.2
-# descript-audio-codec
+descript-audio-codec

utils/tts.py

@@ -92,13 +92,13 @@ class TTSEngine:
                 # Fall through to try Dia
         
         # Try Dia if Kokoro is not available or failed to initialize
-        # if self.engine_type is None and DIA_AVAILABLE:
-        #     logger.info("Using Dia as fallback TTS engine")
-        #     # For Dia, we don't need to initialize anything here
-        #     # The model will be lazy-loaded when needed
-        #     self.pipeline = None
-        #     self.engine_type = "dia"
-        #     logger.info("TTS engine initialized with Dia (lazy loading)")
+        if self.engine_type is None and DIA_AVAILABLE:
+            logger.info("Using Dia as fallback TTS engine")
+            # For Dia, we don't need to initialize anything here
+            # The model will be lazy-loaded when needed
+            self.pipeline = None
+            self.engine_type = "dia"
+            logger.info("TTS engine initialized with Dia (lazy loading)")
         
         # Use dummy if no TTS engines are available
         if self.engine_type is None: