If you need to setup a mix-minus to record Skype for your podcast, this tutorial will show you the gear* you’ll need and how to connect it all together.
The basic concept of a mix-minus is to input multiple sources of audio into an audio mixer (your microphone, sound cart, phone messages, Skype, etc.) then send that audio back out to Skype, minus (without) the Skype caller’s voice.
This setup is achieved by using an auxiliary output to selectively send certain audio out of the mixer. If you send all the audio that is in the mixer, back to Skype, then the person on the other side will hear a feedback loop of their own voice. So we need to exclude (minus) Skype’s audio (the person’s voice) from going back into Skype.
Depending on your mixer’s manufacture, the auxiliary output may be labeled Aux, FX or Mon Send. They’ll all work as auxiliary outputs in this setup.