/// <summary>
        /// Make a "tock" sound (rather like you might hear with a clock's tick-tock sound). This is done is several places,
        /// so this method is provided in order to keep the code related to the choice of sound, in one place.
        /// </summary>
        public void MakeKeyPressSound()
        {
            //todo
#if !SILVERLIGHT
            AudioLib.PlaySoundResource(SoundResourceForKeyPressSound);
#endif
        }
        /// <summary>
        /// Make a "tock" sound (rather like you might hear with a clock's tick-tock sound). This is done is several places,
        /// so this method is provided in order to keep the code related to the choice of sound, in one place.
        /// </summary>
        public void MakeBackspaceSound()
        {
            // WP7 makes a slightly different tone for this, which I like. TODO: Get an audio file to play for this.
#if !SILVERLIGHT
            AudioLib.PlaySoundResource(SoundResourceForKeyPressSound);
#endif
        }