[SlimDevices: SqueezeNetwork] How do I get a second-hand player deregistered from mysqueezebox.com in 2017?

I've seen a lot of posts discussing this problem from back in 2010, but nothing recently. I have just bought a second-hand original Slim Devices-vintage Transporter from ebay and it is still registered to an old mysqueezebox.com account. I performed a factory reset but, as expected, this didn't

Re: [SlimDevices: SqueezeNetwork] Announce: We're updating the official Spotify app

Hi, I noticed a post from October where playlist folders were discussed. Has the API changed since Triode's time? His app handled playlist folders, but in the last few weeks his app has started to take about 30 seconds to display my list of playlists, despite my having slimmed them down to