Playlist Using Different Media Players?

have different players on a given page - youtube, vimeo, soundcloud, etc.
when the first player is finished playing whatever it is, then it can move to the next one and start playing.

obviously we are talking about players that have javascript apis available. what i'm thinking is: have a "state" for when the player is playing (is it called an object?). run a loop that checks to see if the first item is playing, and when it's finished it goes to the next item and plays it.