Cast looks like a promising service for recording podcast multi-enders. When recording podcasts with remote guests I’ll usually record my mic directly and then record Skype from the computer—either feeding the computer’s output to a mixer or using a program like Audio Hijack. Either way, the audio I’m recording of my conversation partner has been compressed and sent through the Internet. There will be artifacts and other glitches. Simply put, it’s not the best.
To get around this issue, I could have the other person record his or her audio locally and then send it to me later. I would then drop that audio into my audio editing software and line it up with my track. This is a chore, because most people aren’t adept at recording. More than that, uploading a ~500MB file can be a pain. And lining the audio up can be laborious—especially if there are any sampling issues and audio drift.
That’s why Cast could be so useful. They look to simplify that process by cutting out all the steps in favor of an easy in-browser solution. I’ve requested an invitation to the private beta. I’ll let you know if it works out.