Humming on track for Podcast

[steve]

I took at your files and you have what seems to me an enormous amount of 60 cycle hum. I tried using a low-pass filter, but I had better luck using the Noise Reduction feature, which removed most of it for me.

There’s also a hum removal plug-in available here: Hum removal plug-in
(the “Hum Threshold Level” needs to be increased to about 24%)

That will get rid of most of the hum, after which a little bit of Noise Reduction could be used.