Please take a look at the file attached.
If you can parse the metadata / header of this mp3 file to determine its length, I would like to hear from you.
Typically this mp3 would be in a mailbox. The job will be for you to develop a web tool that listens to that mailbox, parse its email content, including the attached mp3 file, then send the information to another mailbox in CSV format.
If you are able to show me a working demo that can parse the attached file, you'll be hired immediately.