By Tom GerkenTechnology reporterGetty ImagesSpotify has launched an outspoken attack on new transaction fees of up to 27% being levied by Apple in the US.On Wednesday, Apple announced it would permit app developers to sell products in places other than its own store - but only if they still paid commission.Spotify said that was "outrageous" and accused Apple of "stopping at nothing" to protect its profits. It is urging the British government to prevent similar fees being levied in the UK.Apple h...