Audacity Forum

I've recorded about 6 hours worth of audio (from online radio)

about 1 hour of which, for some reason has a duplicate stream, as if my iTunes activated another channel for an hour while Windows Media Player was streaming. The second stream can hardly be made out, but its certainly there, and the 1 hour has very poor audio as a result, the amplification is deafening and when you turn the volume down it still sounds very distorted and poor, and you can tell something else is playing the back.

What is the best, if any way, to go about trying to remove that second stream.

currently only in .aup format, Audacity v 1.2.6 on Win XP SP3 (home edition)

<<<currently only in .aup format,>>>

Or more accurately, in Audacity Project format. the AUP file is only one of a great many files which make up your show.

I personally would Export As WAV immediately to get the show--even broken--as a stable WAV file that you can use as a backup and even copy to a different hard drive for safekeeping. If, in the coming thread you damage the Project by accident, you may not be able to get back to the original show. In an extreme case, you apply a filter to the Project and Audacity crashes. Then you have no show at all without that back up WAV file.

We warn people that a six hour WAV file is going to be enormous, so make sure you have lots of drive space available. I would also select the show in one hour chunks and Export Selection rather than trying to export the whole thing. A six-hour long Audacity Project will be extremely brittle and prone to damage.

That's the good news. The bad news is you can't. Once Audacity (or any audio program) puts two shows on one timeline at the same time, there's no way to separate them. This is the kind of thing you can get in Windows if you have "Microphone" and "Line-In" open at the same time and record the room air conditioner in addition to the show.

Because Windows will let you record the computer's show output at the same time as an internet show, you probably got a local playback in addition to the fresh internet show. Did you turn up a volume control to hear what you were doing for that hour and then turn it down for the rest?

Koz