Plug.dj repeat check (untested)

var historylist=Models.history.data;
var historylength=historylist.length;

API.addEventListener(API.DJ_UPDATE, repeatcheck);

function repeatcheck(user) {
var historylist=Models.history.data;
var historylength=historylist.length;
var currentID=Models.room.data.media.cid;

for(var j=0; j<historylength;j++) {

if (historylist[j].media.cid == currentID) {
API.sendChat("repeat detected");
}

}

}