Times Square was released as a Region 1 DVD (and I think it was also released as a Spanish-only release as a Region 2 DVD) but it's still really hard to get hold of. The soundtrack album is now out of print although you can sometimes get hold of second hand vinyl copies. Clips from the film are usually up on YouTube though.
The Robin Johnson fansite has quite a lot of information/pictures from the film here.
and Feminist Music Geek has an excellent article on the film here (which includes a more indepth look at the racial/sexual politics of the movie).
EDITED TO ADD: Shelly sent me the link to this brilliant blog which is dedicated to the movie Times Square http://defeatedandgifted.wordpress.com/ - loads to read plus some great photos/clips from the movie.