Most recently uploaded audio file is used for all sessions

[loganwyas]

Describe the bug + expected behavior
When the user uploads a new audio file, it overwrites the previous one instead of being used for just that particular audio session. There should be an individual audio file for each session, and not interfere with the other sessions.

Steps to reproduce

• Create an audio session, and upload an audio file
• Create a second audio session, and upload a different audio file
• Go back to the first audio session, and click "Transcribe". It should have transcribed the audio file of the second session.

Device information

• OS: Windows
• Python version: 3.10.8