Hello,
I wanted to give some feedback on an issue I had with your module.
Because of the design I have to implement, the image description needed to be located under the slideshow. This all went well except that if I changed the background-color to transparent, the transition of the text looked awful. I tried to find this in the stylesheet, but the effect wasn't there. Then I went to the JavaScript but this was obfuscated, so I couldn't use it. Next I downloaded the source of the original Nivo Slider, but there was no effect like this there. Finally I found out that it was the opacity/filter setting that caused this. After overwriting this in my stylesheet.
I would suggest that if you override the source of another slideshow, that you include the original source. That makes debugging for people who use the module a lot easier. I even suspect that you are required to include the full source, as you use a GPL license but I'm not totally sure about that
That was my suggestion, I hope it's useful to you.
Kind regards.