CloudSigma audio transcription tutorial samples

Three English recordings generated with text-to-speech for this tutorial:
- project-weekly-meeting.mp3: project progress, remaining issues, owners, and deadlines.
- customer-feedback.mp3: transcription delays, job-status clarity, and requested improvements.
- product-interview.mp3: batch uploads, transcript search, and interview follow-up tasks.

All people and scenarios are fictional. Upload only the three MP3 files to the workflow. The transcripts/ folder contains the exact source scripts for checking the output; do not upload it as audio or add it to the knowledge base for this exercise.
