Broadcast Audio Delay Software

We are looking for a broadcast delay solution that can variably delay audio (using a slider or other function) from 5 seconds to 60 seconds, and provides a "dump" button. Every piece of delay software I see on the market is for syncing audio from two sources, we have 1 source (a live feed) and need to be able to dump any profanity, or vulgarities from the feed. This needs to be able to utilize two sound cards, one for input, and one for output.