How do I split a WMA/MP3 file into multiple files

I have a 800mb wma file that I need to split into multiple files programmatically on the fly by specifying a start and end point in bytes.

I tried doing it by reading a file into a file stream and then writing it back out changing the start position like this.
        Stream GetAudioPiece(Guid key, int start, int stop)
        {
            FileStream Book = new FileStream("d:\\war_peace.wma", FileMode.Open, FileAccess.Read);
            int partSize = stop - start;
            FileStream Part = new FileStream("d:\\war_part.wma", FileMode.Create, FileAccess.Write);

            byte[] buffer = new byte[partSize];

            int data = 0;
            Book.Position = (long)start;
            data = Book.Read(buffer, 0, partSize);
            Part.Write(buffer, 0, data);
            Part.Close();

            FileStream retValue = File.OpenRead("d:\\war_part.wma");

            return retValue;
        }

This didn't work.  I read somewhere that is because WMA files have headers that are required.  So, the question is: How do I read the header from the original file and attach it to the piece I want to stream back?Start Free Trial