Listen to music via dropbox

Why is that, exactly? In addition to sharing raw files, Dropbox already has a built-in audio player, a built-in image viewer, a built-in documents viewer and a built-in video player. In addition to viewing images individually it has the capability to create an entire image gallery from a folder of images - it is not a huge jump to assume a folder of audio could be played sequentially in the existing audio player. After all, that’s essentially what a playlist is.

Applied to your scenario McDonalds is already selling all the car parts and advertising that it does vehicle repairs, so it’s not a silly or unreasonable request to say ‘you have all the parts available and we know you will change a brake-pad, so why won’t you change a tyre as well?’

Also, I’d generally expect a more helpful, and perhaps more adult response from an ‘Experienced Collaborator’. There may very well be technical challenges that mean this feature is not possible, and it would have been fine to relay those, but your response was facile, rude, dismissive and added zero context. As a developer looking in from the outside this should be relatively easy to implement and is therefore reasonable to request.