Spotify is testing an offline mix for bad signal days

Isn't it annoying when you need your daily dose of music, but your internet connection is patchy, or you're in mid-flight and suddenly realize you forgot to download your favorite tracks? If these complaints are familiar, we have good news for you. Music streaming giant Spotify is testing a new feature that music fanatics are bound to love — an offline playlist that automatically downloads your go-to songs in case of a rainy day. In a tweet posted on Thursday, the company's CEO, Daniel Ek, rev...