Isn’t that adorable.If at first you don’t succeed, try again using someone else’s system: Sony is pulling the plug on its current streaming music offering, Music Unlimited, and hitching its wagon to Spotify’s star with a new partnership for PlayStation. Sony will shut down Music Unlimited on March 29, with the new service called PlayStation music debuting sometime this spring, the company announced in a blog post today. It’s been tough road for Sony’s on-demand streaming service, which started as Qriocity (say it out loud, groan) in 2010 in the UK and Ireland before expanding to 19 countries and changing its name multiple times.