Suggestion: Compatibility with BeardedSpice

[tstackhouse]

BeardedSpice is a utility to map play/pause commands to a host of different media apps, including a bunch of web based ones, e.g. Pandora, TuneIn, Subsonic, etc.

It might be useful to look into how they handle that interaction, or to provide a simple interface to use BS as the "player" in BGM and let it handle the dispatch of the play/pause commands.

Here is the link to the repo: https://github.com/beardedspice/beardedspice