The object..

var instruments = {
   "default":{
      "url":"/mp3/",
      "ext":".wav.mp3",
      "elem":{
         "0":{
            "jQuery171020503955939784646":50
         },
         "selector":"",
         "length":1
      },
      "index":0
   },
   "softPiano":{
      "url":"http://24.158.102.46:8218/CustomSounds/SoftPiano/",
      "ext":".mp3",
      "elem":{
         "0":{
            "jQuery171020503955939784646":51
         },
         "selector":"",
         "length":1
      },
      "index":1
   },
   "MusicBox":{
      "url":"http://24.158.102.46:8218/CustomSounds/MusicBox/",
      "ext":".mp3",
      "elem":{
         "0":{
            "jQuery171020503955939784646":52
         },
         "selector":"",
         "length":1
      },
      "index":2
   },
   "cleanPiano":{
      "url":"http://24.158.102.46:8218/CustomSounds/CleanPiano/",
      "ext":".mp3",
      "elem":{
         "0":{
            "jQuery171020503955939784646":53
         },
         "selector":"",
         "length":1
      },
      "index":3
   },
   "Guitar":{
      "url":"http://24.158.102.46:8218/CustomSounds/Guitar/",
      "ext":".mp3",
      "elem":{
         "0":{
            "jQuery171020503955939784646":54
         },
         "selector":"",
         "length":1
      },
      "index":4
   },
   "Harpsicord":{
      "url":"http://24.158.102.46:8218/CustomSounds/Harpsicord/",
      "ext":".mp3",
      "elem":{
         "0":{
            "jQuery171020503955939784646":55
         },
         "selector":"",
         "length":1
      },
      "index":5
   },
   "Bells":{
      "url":"http://24.158.102.46:8218/CustomSounds/Bells/",
      "ext":".mp3",
      "elem":{
         "0":{
            "jQuery171020503955939784646":56
         },
         "selector":"",
         "length":1
      },
      "index":6
   }
}