Album Art, Track Duration, And An Error?

[Tyler Wiebe]

Okay, I'm using the following to get information from mp3 files

        public Track(string Location)
        {
            if (System.IO.File.Exists(Location))
            {
                System.IO.FileStream FileStream = System.IO.File.OpenRead(Location);
                System.IO.BinaryReader ByteStream = new System.IO.BinaryReader(FileStream);

                FileStream.Seek(-128, System.IO.SeekOrigin.End);
                if (System.Text.Encoding.Default.GetString(ByteStream.ReadBytes(3)) == "TAG")
                {
                    this.Title = System.Text.Encoding.Default.GetString(ByteStream.ReadBytes(30)).Trim();
                    this.Artist = System.Text.Encoding.Default.GetString(ByteStream.ReadBytes(30)).Trim();
                    this.Album = System.Text.Encoding.Default.GetString(ByteStream.ReadBytes(30)).Trim();
                    this.Year = int.Parse(System.Text.Encoding.Default.GetString(ByteStream.ReadBytes(4)).Trim());

                    ByteStream.BaseStream.Position = 126;
                    byte[] TrackNumber = ByteStream.ReadBytes(2);
                    if (TrackNumber[0] == 0 && TrackNumber[1] != 0) this.TrackNumber = TrackNumber[1];

                    this.Location = Location;
                }

                FileStream.Close();
            }
        }

First off, as you can see, this doesn't get the files album artwork, or the duration of the song, so I'm wondering how I can do that.

Secondly, the function I found for finding the track number doesn't seem to be working at all, and I'd like to know why.

And lastly, out of all of my mp3 files, only 1002 out of 1093 contain the "TAG" ID, so I'm wondering, why is that, and does anyone know a way to get the missing ones?