//////////

    //

    // add samples to the sprite track's media

    //

    //////////

    BeginMediaEdits(myMedia);

    // go to beginning button with no actions

    myErr = QTNewAtomContainer(&myBeginButton);

    if (myErr != noErr)

        goto bail;

    myLocation.h    = (1 * kSpriteTrackWidth / 8) - (kStartEndButtonWidth / 2);

    myLocation.v    = (4 * kSpriteTrackHeight / 5) - (kStartEndButtonHeight / 2);

    isVisible       = false;

    myLayer         = 1;

    myIndex         = kGoToBeginningButtonUpIndex;

    myErr = SetSpriteData(myBeginButton,

                        &myLocation,    /* sprite location */

                        &isVisible,     /* sprite visible property */

                        &myLayer,       /* sprite layer (smaller #'s are further forward) */

                        &myIndex,       /* sprite index property */

                        NULL,

                        NULL,

                        myActions);

    if (myErr != noErr)

        goto bail;

    // go to previous button with no actions

    myErr = QTNewAtomContainer(&myPrevButton);

    if (myErr != noErr)

        goto bail;

    myLocation.h    = (3 * kSpriteTrackWidth / 8) - (kNextPrevButtonWidth / 2);

    myLocation.v    = (4 * kSpriteTrackHeight / 5) - (kStartEndButtonHeight / 2);

    isVisible       = false;

    myLayer         = 1;

    myIndex         = kGoToPrevButtonUpIndex;

    myErr = SetSpriteData(myPrevButton, &myLocation, &isVisible, &myLayer, &myIndex, NULL, NULL, myActions);

    if (myErr != noErr)

        goto bail;

    // go to next button with no actions

    myErr = QTNewAtomContainer(&myNextButton);

    if (myErr != noErr)

        goto bail;

    myLocation.h    = (5 * kSpriteTrackWidth / 8) - (kNextPrevButtonWidth / 2);

    myLocation.v    = (4 * kSpriteTrackHeight / 5) - (kStartEndButtonHeight / 2);

    isVisible       = false;

    myLayer         = 1;

    myIndex         = kGoToNextButtonUpIndex;

    myErr = SetSpriteData(myNextButton, &myLocation, &isVisible, &myLayer, &myIndex, NULL, NULL, myActions);

    if (myErr != noErr)

        goto bail;

    // go to end button with no actions

    myErr = QTNewAtomContainer(&myEndButton);

    if (myErr != noErr)

        goto bail;

    myLocation.h    = (7 * kSpriteTrackWidth / 8) - (kStartEndButtonWidth / 2);

    myLocation.v    = (4 * kSpriteTrackHeight / 5) - (kStartEndButtonHeight / 2);

    isVisible       = false;

    myLayer         = 1;

    myIndex         = kGoToEndButtonUpIndex;

    myErr = SetSpriteData(myEndButton, &myLocation, &isVisible, &myLayer, &myIndex, NULL, NULL, myActions);

    if (myErr != noErr)

        goto bail;

    // first penguin sprite with no actions

    myErr = QTNewAtomContainer(&myPenguinOne);

    if (myErr != noErr)

        goto bail;

    myLocation.h    = (3 * kSpriteTrackWidth / 8) - (kPenguinWidth / 2);

    myLocation.v    = (kSpriteTrackHeight / 4) - (kPenguinHeight / 2);

    isVisible       = true;

    myLayer         = 2;

    myIndex         = kPenguinDownRightCycleStartIndex;

    myGraphicsMode.graphicsMode = blend;

    myGraphicsMode.opColor.red = myGraphicsMode.opColor.green = myGraphicsMode.opColor.blue = 0x8FFF;   // grey

    myErr = SetSpriteData(myPenguinOne, &myLocation, &isVisible, &myLayer, &myIndex, &myGraphicsMode, NULL, myActions);

    if (myErr != noErr)

        goto bail;

    // second penguin sprite with no actions

    myErr = QTNewAtomContainer(&myPenguinTwo);

    if (myErr != noErr)

        goto bail;

    myLocation.h    = (5 * kSpriteTrackWidth / 8) - (kPenguinWidth / 2);

    myLocation.v    = (kSpriteTrackHeight / 4) - (kPenguinHeight / 2);

    isVisible       = true;

    myLayer         = 3;

    myIndex         = kPenguinForwardIndex;

    myErr = SetSpriteData(myPenguinTwo, &myLocation, &isVisible, &myLayer, &myIndex, NULL, NULL, myActions);

    if (myErr != noErr)

        goto bail;