Re: Installing Spotify on Linux Mint.
That's great. Spotify should probably put those instructions on their Linux page. When I tried it, on Mint 17.3 x64 (not the latest, I realise, but I happened to have a VM with it installed for other reasons), I was offered two choices, spotify-client-0.9.17, which appears to be v0.9.17 (natch), and spotify-client:i386, which appears to be v18.104.22.168. Personally, I don't think it's obvious which one to install. I probably don't want the i386 one, since I'm on a 64 bit OS, but it's the later version, so probably I do. There's some usability work to do there, I feel.
But the bigger problem that I see is that while life is good for those using Mint, do those instructions you supplied work for openSUSE? For Fedora? For Ubuntu?
For Windows and Mac, you get one file, that you double-click to install. The current Windows client seems to be v1.0.45, so the Mint distros are a bit behind the times. If there was a single file that you could download direct from the Spotify web site, that would
a) remove the problem of "is this the real thing or not?" that is always a concern when downloading from a link found via a search engine, regardless of operating system.
b) guarantee it was the latest version, without relying on the repo maintainers to keep it updated.
So, a serious question, which is a serious question, even though I'm aware it will look like Linux-trolling, and I'm hoping that someone who develops for the Linux platform, rather than just uses it, can answer. Why is the method different for Linux? What is the advantage in not simply supplying a packaged install that people can download direct from spotify.com?