move utils.audio to audio.utils and add resample_audio()

CHANGELOG.md

@@ -9,17 +9,22 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
-- Added a websocket service for PlayHT, called `PlayHTTTSService`.
 - Added input parameter options for `PlayHTTTSService` and
   `PlayHTHttpTTSService`.
 
 ### Changed
 
+- Module `utils.audio` is now `audio.utils`. A new `resample_audio` function has
+  been added.
+
+- `PlayHTTTSService` now uses PlayHT websockets instead of HTTP requests.
+
+- The previous `PlayHTTTSService` HTTP implementation is now
+  `PlayHTHttpTTSService`.
+
 - `PlayHTTTSService` and `PlayHTHttpTTSService` now use a `voice_engine` of
   `PlayHT3.0-mini`, which allows for multi-lingual support.
-- Changed the name of the HTTP PlayHT service from `PlayHTTTSService` to
-  `PlayHTHttpTTSService` since there's now a websocket service, which is the
-  default.
+
 - Renamed `OpenAILLMServiceRealtimeBeta` to `OpenAIRealtimeBetaLLMService` to
   match other services.