you are talking about a dedicated server here. dedicated servers are for hosting only. not for playing.
if you want to host AND play on your PC at the same time it's even easier. you don't even need the dedicated server for that. simply start the normal cs2d client and click
new game
start
that's where the magic begins! it's unbelievable but now you're server and player at the same time! yes! it's really that easy!
however no one will be able to see/join when you didn't setup your router/firewall(s) properly (see linked thread)!