SpotShuffler is a shuffle application for your Spotify library, based on the popularity of the tracks. This version plays all your saved albums and songs.
Login with your Spotify account, and choose whether you want to hear your low, mid or highly popular tracks, played randomly. The tracks are grouped by the popularity index, which is set for each track by Spotify. To quote them: "The popularity of a track is a value between 0 and 100, with 100 being the most popular. The popularity is calculated by algorithm and is based, in the most part, on the total number of plays the track has had and how recent those plays are."