Often CDs contain intro tracks that are separate songs, but link in to other songs
e.g hard **** -> **** her gently (tenacious D)
intro -> Come Out Swinging (offspring)
etc
song 1 -> song 2

Basically i would like a way to mark two songs as linked and then whenever song 1 is played, if song 2 is in the playlist that song gets played next. I think there could be 3 modes
Next -> if song 1 is played automatically play song 2
Both -> song 1 always precedes song 2, e.g if song 2 is played song 1 gets played instead then song 2 gets played
Off -> no linking