Gotcha.

I've actually seen indie apps created for commercial release that include an information screen crediting the programmers (and myself for my music.) To me, that just seems more professional, but then again I come from film world. :-) I can certainly see where it would be ridiculous to attribute, say, every texture you used...or sprites, or sound effects...(the credit list could really get out of control!)...but there are far fewer music assets in games than graphics and such so I don't understand why some developers don't want to credit the composer(s). Again, though, I come from film world, so I could be way off base. :-)