Ben Nguyen wrote:
I have a bad audio tape that contains both sides of the tape recording
on one side. So when played you can hear both sides at the same time
with one track backwards.

This was recorded on a machine with a misaligned head, I assume. What you
need is to play it back on a machine with a narrower than normal head.

If this is a half-track tape, you can put it on a quarter-track machine and
then move the head height adjustment up and down until you find a place where
it sounds good.

Sonic Foundry has a reverse feature but I cant separate the 2 sides so that
I can reverse just one (The audio clip shows up as just one waveform.)

Is there a way to filter the waveform into its 2 track components?

This is a physical problem with the tape. It needs to be fixed with proper
playback.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."