This falls into my realm of experience very well. I have done this a couple times for visual arts projects at my university. However, I have been paid many times professionally by a senior living facility network that I volunteer for. Since they use projectors connected to computers most of the time to show movies for the patients, I have transcribed entire movies for them.
Would look forward to working with you and can GUARANTEE that this will be done within 24 hours. I have made your 15 second sample, but can no PM you, I hope that I can resolve this issue and that you will consider me as your freelancer. Thanks