As per your suggestions Jerm, I just purchased BIAS SoundSoap as plug-in to remove hiss and rumble from audio. This software works fine in Metro and does an excellent job--actually there is a handy feature that allows you to hear just the sound being removed and then to adjust how much of that is removed from the audio. Sure this is a very simple question but to apply the plug-in do I need to let the 60 minutes-plus audio file play through in real-time with the plug-in on or can I apply the plug-in setting to the whole file (is this a batch file process?)?
Thanks,
Steve