Some more updates...
I've added support for own extremely simple image format, and I added a SDL_nDrawStringInRect() function which draws a string within the boundaries of an SDL_Rect, as you could imagine. Here's a little screenshot showing off the NSP_FONT_AUTOSIZE feature (non-monospaced fonts), SDL_nDrawStringInRect() (the purple rectangle is only to show how it fits itself inside it, it's not part of the function), and an image included in the executable (everything is of course well integrated into SDL, the SDL_nLoadImage() function returns an SDL_Surface for example):

Here's also a more recent screenshot of the image converter that'll be included with nSDL 0.2.0:
