Recovering choppy and echoing audio.

There are a few things to note about this: Firstly, because of the repeats it sounds as though you've recorded a digital feedback loop with latency in it. I'll tell you now that there's no fix for this at all, I'm afraid; that audio is screwed beyond any help at all.

Secondly, it's not possible to record a file in Audition with effects on it. You may think you are recording one, but actually the channel records dry. You may even think you have when you play it back, but if you remove those effects from the master channel, you'll realise that you haven't. The reason for this is that it's industry standard practice not to - simply because if you make a processing mistake, there's no way of undoing it.

So what's going on? I suspect from listening to it that somehow, the added-latency output from the master channel is being fed back to your Audiobox and added to the input that you're trying to record - and that's where the digital feedback has come from. The way to test this is to try another recording with the Master volume turned down to zero. If it doesn't happen then, you'll know what it is!

Normally (and indeed because of precisely this) you'd monitor directly from your recording device, and don't try and feed anything back from the computer whilst making the recording. You can't avoid the round-trip latency completely, whatever you do, and the best way to avoid having the problem is not to invoke it in the first place! That may be as simple as turning the 'Mixer' control on the Audiobox to 'inputs' but you may still find that you need to mute the Master channel in Audition as well.