It's a $200 product, Dan's site sells it direct for $100, and this site has it for $50 for the new few days:
http://www.samplerzone.com/catalog/product_info.php?products_id=157 That site is a store front for the well-known Chickensystems, I believe.
DDSSA is a bit dated, but has always sounded great for what it is. The original solo strings were updated to run in K2 player (yay! no full kontakt required, all you Cretan holdouts!) and include some programming for divisi, etc. Worth a look... I figured it would be useful to me for some simpler layered strings, as well as combining w/ other string libraries that I own for a little flava... Just purchased, but I may not get the download links for a couple of days, given the holiday...
Some random guy's youtube creation using DDSSA...
http://www.youtube.com/watch?v=gXxK0ZjsxRg ... Some demos on DD's site as well.
Not bad for $50!
EDIT: or, I should say, it should run in the very latest free kontakt player as well...