Replacing audio track with and synching with separate recording

Question

Hello,
I've read everything I can find, including numerous websites, the help file, and a book, but can't find this answer with step by step instructions using Premiere Elements 9.
I have the trial version, and will purchase once I figure this out. I only need to make Youtube videos with a separately recorded audio file replacing the audio that is already on the video. in other words,  I have a separate Mp3 audio file of the same audio performance using an audio recorder and I want to replace the audio on the original video with the other Mp3.
What are the steps involved to make sure the new audio is in synch with the audio already on the video, beginning with the original recordings and working through to the finished product?
Thank you.

Answer 1

Hunt, I hope I didn't seem dismissive of Steve's book - I did think it was very good and am glad I purchased it. I just wasn't able to figure out the answer based on what was in it.
I did not take your comment as dismissive in any way, and highly doubt that Steve did either. I do not have his newer version book, but only some older ones, or I would have grabbed it and checked to see if he DID cover this material in it, just maybe buried in another topic. My comments were pure speculation, as what you are doing is not "mainstream," though is becoming more so monthly.
For my PrPro (slightly older version), I have the printed manual (yes, they used to do those), the Adobe Classroom in a Book, plus several other volumes dedicated to it, and even the print-out of the Help File PDF. Still, I, and other users are always coming up with some use, that is not covered anywhere!
One of the recent changes to the Help File in many Adobe programs, is that it is now a live On-line document, and there are engineers, who do little but update and add to that. This was almost impossible with printed material (though I still have my old ring-binder for the original WordPerfect, and monthly, they used to send me new pages to either add, or replace - long time ago).
When I am working in the forums, I usually have the particular program open and in front of me, as I am always coming up against questions, thinking, "wow, I would never have thought of doing that," and having to duplicate the actions that a poster outlines, or experimenting to find if what they want is possible. Often, when I do one of the experiments successfully, I'll add an article on doing it, to the Tips & Tricks sub-forum here. One example of that was "Fading a Title Crawl," which turned out to be both fun, and relatively easy, when I got into the experiments.
I have a stong feeling that Steve will have a bit more "music video" instruction in his next PrE book, as it is becoming more popular, as evidenced by the number of posts that we are seeing lately. More folk are doing that. Same thing for shooting with what were considered non-standard cameras, just a few years ago, like various smartphones.
Good luck, and happy editing,
Hunt