For one: you can play your music collection from any location if it's stored on Dropbox?

isn't that kind of inherently possible due to the nature of Dropbox? Albeit this has a proper UI.

Plex, for instance, does this and much more provided you have a collection not in a cloud.

Plex however relies on you either have 1) a good home connection (with no caps) or 2) a server "in the cloud(tm)". Dropbox provides the backend hosting, which makes providing the data files easier.

well it was an honest question.

I don't see myself doing this so i just simply ask. There's no need to downvote.

You were downvoted because of the tone of your comment—it comes across as snarky and dismissive, even if you didn't mean it that way.

To have access to your music library from a web browser.

why the downvotes? the parent comment is not rude and is asking a genuine question (in fact, he is apologetic).

downvotes is a tool for marking irrelevant/obnoxious comments which don't help discussion. this question definitely helps discussion.