I've just entered in streaming world, buying an AV player supporting internet radios and Spotify Connect. I've connected it to my 15 years old Sony home cinema receiver via coax audio cable. Started listening Spotify, on the AV player in Spotify app there is only LOW-Medium-High setting for quality. I'm using my mobile/desktop computer to select music on player. During last 2 days I've 2 times ad from Spotify (itself). The qulity seems to be OK as of now. My question > Do I need premium subscription for Spotify? Thanks