Demo3

{

   "synthDef": {
       "ugen": "flock.ugen.playBuffer",
       "buffer": {
           "id": "chord",
           "url": "http://musiki.org.ar/Archivo:I1_Batatex_Trueno.wav"
       },
       "speed": {
           "ugen": "flock.ugen.mouse.cursor",
           "options": {
            "axis": "y"
           },
           "add": 0.5
       },
       "loop": 1,
       "start": 0,
       "end": {
           "ugen": "flock.ugen.mouse.cursor",
           "options": {
               "axis": "x"
           }
       }
   }

}