The video posted here has a 60-cycle buzz in the background.
(you can download this file...the attached image shows you how to do this)
Please remove this buzz without noticeably affecting the audio from the voice of the speaker in the video.
We have at least 5 videos like this which must have the buzz removed, so this will lead to more work and more contracts.
Show us what you can do by submitting a sample of this video with the audio fixed as part of your application. The first to impress us this way gets hired.
Thanks, and good luck,