Strange Behavior of Shuffle Option

[Sanicho3]

Im not really sure where this should go or if I should be writing to you all in a different way about this but I recently noticed that a playlist I made, consisting of over 500 songs and 34 hrs of music, seems to "cycle" back onto itself after a bit of time playing. Im talking after maybe 30-40 mins songs will begin to repeat in the same or similar order that they originally played in. I beleive you might have something wrong with your random number generator you are using to accomplish the "shuffle", if you're using a Linear Congruential Generator you might not have the moderator value m set high enough causing the sequence to repeat. Don't know, but its frustrating to have a playlist that I made with the intention of not having to hear the same songs repeatedly doing the exact opposite. 

[MattSuda]

Read this article:

http://www.dailymail.co.uk/sciencetech/article-2960934/Is-music-player-really-random-Spotify-says-us...