I actually recently set up something similar. I use opengateway with authorize.net and it will post to a url during a transaction. I have it post to a local s

I actually recently set up something similar. I use opengateway with authorize.net and it will post to a url during a transaction. I have it post to a local server, that plays a specific .wav file depending on the transaction type. There are 5 transaction types and I use a slot machine, cash register, bells, and crowd cheering noises. Got the idea from this movie http://www.imdb.com/title/tt1251757/ http://www.imdb.com/title/tt1251757/