DirectoryInfo().GetFiles works incorrectly in Standalone

So, i'm making adding your own music possible in my game and i hit a problem which is: I'm using a function to look for a folder, search for files in it, save them in array and play them in random order. It works perfect in unity editor but when i compile it for standalone, it is not so cool... i debugged what does GetFiles() function return in both cases and i got:

full file path + filename - in editor && only filename in standalone

so I'm assuming that it is an internal unity bug as some other things stopped working for me after Unity 4 came to my PC... here's code I'm using:

 private var IsAnyMusicInFolder : boolean = false;
 private var CheckMusicFolder : boolean = false;
 private var ReadyToPlay : boolean = false;
 private var MusicPlaying : boolean = false;
 var MusicTrackID : float = 0;
 private var NoMusicTimer : float = 0;
 private var RandMusicID : float = 0;
 private var ExtMusicFile : WWW;
 function LoadMusicFromMusicFolder (){
     if (Directory.Exists(Application.dataPath+"/Music")){var info = new DirectoryInfo(Application.dataPath+"/Music");}
     if (!info){CheckMusicFolder = true;}else{
         if (!CheckMusicFolder){var fileInfo = info.GetFiles("*.ogg");}
             if (!CheckMusicFolder && fileInfo.length > 0){
                 MusicAssignIDRandomizer.Clear();
                 IsAnyMusicInFolder = false; ReadyToPlay = false; MusicTrackID = 0;
                 MusicFilesFromExtSrc = new String[fileInfo.length];
                 for (i=0; i < fileInfo.length; i++){
                     RandMusicID = Random.Range(0, MusicFilesFromExtSrc.length);
                         if (ArrayUtilityInt(RandMusicID, MusicAssignIDRandomizer) == false){
                             MusicFilesFromExtSrc[i] = fileInfo[RandMusicID].ToString();
                             Debug.Log (MusicFilesFromExtSrc[i]);
                             MusicAssignIDRandomizer.Add (RandMusicID);
                         } else {i--;}
                 }
                 IsAnyMusicInFolder = true; CheckMusicFolder = true;
             } else {CheckMusicFolder = true;}
             if (CheckMusicFolder && IsAnyMusicInFolder){
                 if (!ReadyToPlay){
                     Destroy(audio.clip);
                     ExtMusicFile = new WWW ("file://"+MusicFilesFromExtSrc[MusicTrackID]);
                     //else{ExtMusicFile = new WWW ("file://"+Application.dataPath+"/Music/"+MusicFilesFromExtSrc[MusicTrackID]); Debug.Log("file://"+Application.dataPath+"/Music/"+MusicFilesFromExtSrc[MusicTrackID]);}
                     audio.clip = ExtMusicFile.GetAudioClip(false, false);
                     ReadyToPlay = true;
                 }
                 if (!audio.isPlaying){NoMusicTimer += Time.deltaTime;
                     if (NoMusicTimer > 0.1 && audio.clip.isReadyToPlay){Debug.Log("Fuck");audio.Play();}
                 }  else {NoMusicTimer = 0;}
                 if (audio.clip.length-audio.time<0.5 && audio.isPlaying){
                     if (MusicTrackID < MusicFilesFromExtSrc.length-1){
                         MusicTrackID++;
                     } else {CheckMusicFolder = false;}
                     ReadyToPlay = false;
                 }
                 if (Input.GetKeyDown("/")){
                     if (MusicTrackID < MusicFilesFromExtSrc.length-1){
                         MusicTrackID++;
                     } else {CheckMusicFolder = false;}
                     ReadyToPlay = false;
                 }
             }
     }
 }
 function ArrayUtilityInt (RandNumber : float, ObjArray : Array){
     for (i = 0; i < ObjArray.length; i++){
         if (ObjArray[i] == RandNumber){
             return true;
         }
     }
 }