//////////

    //

    // create the sprite track and media

    //

    //////////

    myTrack = NewMovieTrack(myMovie, ((long)kSpriteTrackWidth << 16), ((long)kSpriteTrackHeight << 16), kNoVolume);

    myMedia = NewTrackMedia(myTrack, SpriteMediaType, kSpriteMediaTimeScale, NULL, 0);