For just £21 you can get the software that really does the job easily. Record split tracks automatically or manually add fade in/out, de click/hiss.
It's called the unlikely name of Polderbits recorder, here's the link. Just try it!

Polderbits sound recorder

I have no connection with the company But I was very impressed with this tool. I use soundforge for more serious stuff but that is very long winded.

Andy