1st one, shutter to slow (hence the movement blur and non sharp dj), need alot more iso to get the image I did (mine was 3200 for example).
Rest 1/60 might be considered by many as way to fast to alow much ambient in.
With the d60 you will struggle like the one on the 5d as you wont have the iso performance, the club you shoot in looks fairly well lit, flash 1/4 iso 640/800 F4, and go from there adjusting and playing.
and I hope they are paying you