Perhaps I could have carried out a little more research on this and maybe this is something I could look into in the future. I bought the tablet after work yesterday.
When I finally got around to getting myself a nice stereo I was putting speakers into other rooms and I decided I didn't want to depend on bluetooth or wireless. I wanted the unit to stand alone, so to speak. This is why I didn't even consider one of those streaming devices that i've heard of people using for their spotify subscriptions.
To be honest a 64gb microsd card for a tablet would solve my problems. I'm sitting on about 47gb and even if I bought a cd a week it would take quite a while to fill it.