@sacro – The “title” I am suspecting is from the Alt&Title text of the images, those will not likely go away without some sort of customization (possibly some custom JavaScript to remove it would be a way to go?); as to the text under the images, that is not currently available with the NextGEN Slideshow widget but you are welcome to suggest it as a Feature Request here: http://www.nextgen-gallery.com/feature-voting/
Thanks!
– Cais.