We are provided with monorail.wav, an catchy tune that sounds like it has Morse Code overlaid on it
I personally use Audacity when doing any form of Morse Code related challenge as it allows me to clearly visual any spaces between words.
Technical Details: 1000hz 25wpm
We end up with the following Morse Code:
.. -.-. --- ..- .-.. -.. .-.. .. ... - . -. - --- - .... .. ... --- -. .-.. --- --- .--. .- .-.. .-.. -.. .- -.--
Upon converting that to English we end up with the FLAG: ICOULDLISTENTOTHISONLOOPALLDAY