Here is an interesting concept that removes the clutter of stereo equipment into a very unexpected location. The Sound Blind Speaker design by Wonho Bae is actually a set of blinds that plays music.
The concept description is very vague but we can be sure that there is some sort of electrical connection for power and a different connector via wireless or cord to attach the speakers to a sound system.
The only thing for sure is that the Sound Blind Speakers can be pulled up just like regular blinds (apparently it won’t ruin the speakers). This might be a little out there, but you can’t say you wouldn’t want speakers for curtains.