update reference sample

app.py

@@ -352,7 +352,7 @@ def init_predefined_texts_and_prompts():
     try:
         # 从reference_audio_files中筛选10个作为预置prompt
         if reference_audio_files:
-            selected_prompts = random.sample(reference_audio_files, min(10, len(reference_audio_files)))
+            selected_prompts = random.sample(reference_audio_files, min(50, len(reference_audio_files)))
             for i, prompt_path in enumerate(selected_prompts):
                 prompt_name = f"preset_prompt_{i + 1}"
                 # 计算文件md5