add audio

README.md

@@ -126,11 +126,17 @@ the next best model**, and it runs faster than real time on a laptop CPU.
 
 <audio controls><source src="https://huggingface.co/zeroweight-ai/ZeroTTS/resolve/main/samples/news-code-switch.mp3" type="audio/mpeg"></audio>
 
-**Cross-lingual — a Vietnamese reference voice reading English**
+**Cross-lingual**
+
+Reference audio (Vietnamese) 
 
 <audio controls><source src="https://huggingface.co/zeroweight-ai/ZeroTTS/resolve/main/samples/cross-lingual-reference-vi.mp3" type="audio/mpeg"></audio>
+
+Output (English) 
+
 <audio controls><source src="https://huggingface.co/zeroweight-ai/ZeroTTS/resolve/main/samples/cross-lingual-english.mp3" type="audio/mpeg"></audio>
 
+## Usage
 ```python
 pip install zerotts
 ```