Is Facebook Planning an Online Music Service?

It's a circus with Amazon, Google, Apple and possibly Facebook launching an online music service.

Software Engineer Jeff Rose peered into the code of the app required for the new Facebook video chat and discovered a reference to Vibes and a MusicDownloadDialog. Here's the code he found:

return this.window.getMember("VideoChatPlugin");
if (paramString.equals("com.facebook.vibes")) {
return this.window.getMember("MusicDownloadDialog");

We have no idea what Facebook is planning, but it likely has to do with music. Any thoughts? [Mashable; Shutterstock/TomK]
