public HttpResponseMessage PlaySong(Command comand)
 {
     return this.PerformOperation(() => {
         ValidateWinamp();
         wa.Play((uint)comand.Param);
     });           
 }
 public HttpResponseMessage SetVolume(Command command)
 {
     return this.PerformOperation(() =>
     {
         ValidateWinamp();
         wa.Volume = command.Param;
     });
 }