Add model auto-download and English logging

app/audio/sources.py

@@ -104,7 +104,7 @@ def get_url_file(url: str, max_file_size_mb: int = 100) -> Tuple[Optional[str],
         return temp_path, original_name or os.path.basename(temp_path), None
 
     except Exception as e:
-        logger.error("Ошибка при получении файла по URL %s: %s", url, e)
+        logger.error("Failed to fetch file from URL %s: %s", url, e)
         return None, None, f"Error retrieving file from URL: {str(e)}"
 
 
@@ -144,5 +144,5 @@ def get_base64_file(base64_data: str, max_file_size_mb: int = 100) -> Tuple[Opti
         return temp_path, os.path.basename(temp_path), None
 
     except Exception as e:
-        logger.error("Ошибка при декодировании base64 данных: %s", e)
+        logger.error("Failed to decode base64 data: %s", e)
         return None, None, f"Error decoding base64 data: {str(e)}"