not able to play audio in speech data explorer
I am trying to explore ASR training data through the speech explorer tool and prepared the required manifest file in json format. It has three fields, audio_filepath, duration, and text. 

**Steps/Code to reproduce bug**

python tools/speech_data_explorer/data_explorer.py manifest.json

**Expected behavior**
It is loading the data in an expected manner. I am able to see text, duration, and file name. However, I am not able to play the audio. The audio player does not seem to be working.  

**Environment overview (please complete the following information)**

pip install -r tools/speech_data_explorer/requirements.txt

 - Using on an M1 mac machine

**Environment details**

- OS version - macOS Monterry M1
- Python version - 3.8.11

