Plug.dj repeat check (untested)

Models.history.load();
var skippedsongs = new Array();

API.addEventListener(API.DJ_UPDATE, repeatcheck);

function inarray(array, id) {
    for(var i=0;i<array.length;i++) {
        if(array[i][0].id == id) {
            return true;
        }
    }
    return false;
}

function repeatcheck(user) {

var historylist=Models.history.data;
var currentID=Models.room.data.media.cid;

for(var j=1; j<50;j++) {

if (historylist[j].media.cid == currentID) {

var result = inarray(skippedsongs, currentID);

if (result === false) {
API.moderateForceSkip();
API.sendChat("Sorry, that song's still in history");
skippedsongs.push(currentID);
}
}
}

}