Hey,
Syntrillium doesn't exist anymore, it's now Adobe who handles everything. You'll have to buy it from them...if you do buy a second hand copy off someone, make sure to ask Adobe about transferring the license into your name and see if there are any fees involved.
Mr. Black,
You don't have to actually 'record' your audio from Reason into Cool Edit, you should only have to export the audio from Reason, save it as a wav file on your hard drive, then import the wav into Cool Edit.
Take care,
Nick