How to Replace Images
To replace slideshow images right click on the slide and click Replace Image. Or you can right click on the slide and select Clear Widget Contents.
Then open the slideshow option panels and click Add Images.
You will have to adjust your tooltips by clicking on it and moving the image out of the way.
Product Hover Effect
The product hover effect is achieved by the settings in the Fill panel for the rollover state. You can customize it by changing the color and opacity.