Similar to the playlist view on Windows and Linux, VLC for Mac will get a sidebar in version 1.2. This way, you can easily access your media folders and media shared on the local network and the internet. Future versions will evolve to a full media library.
That’s what it looks like so far:
More media aggregators will be added until the release. As you would expect, of course you can hide this sidebar if you just need a playlist without any clutter.