It does have the expansion slot, which is probably why the 8GB is so popular.
Even on my full tablet, I move as much as I can onto the micro SDcard because its faster than the onboard for some crazy reason.
https://en.wikipedia.org/wiki/Kindle_Fire
Being only 1GB memory is probably getting my hopes up though. Still - Spotify without tying down another device is always useful, Bluetooth 4.1 is perfectly acceptable for high quality audio.
Totally retarded that they labelled the generations 1,2,5 and 7 though.