Extending the length of an MP3 file

I need to add about 20 seconds of voice to the start of an MP3 recording without deleting any of the existing recording.

How to do this, Experts, please?
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☠ MASQ ☠Commented:
Merging MP3 files is actually pretty easy - assuming both are recorded with the same bitrate (if they aren't you may find one of the tracks plays faster or slower than it should!).  The trick is to strip off any metadata (like ID3 codes used for tagging track details on music MP3s) first otherwise you end up with bits of odd code floating about inside the merged file.

Quickest and easiest is to use a freeware merging program.

I happen to like MergeMP3 because it's got a simple interface, you just add the files to a list, sort them into the order you want and ask it to merge them into a single mp3.

In your case create the short voice mp3 you want to add, add that, the original file, highlight both and choose Merge Highlighted from the File menu.  The output file is placed in the same folder as the original data

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Gordon_AtherleyAuthor Commented:
Excellent, thank you, MASQ.

Exactly what I needed.
Joe Winograd, Fellow&MVEDeveloperCommented:
Hi Gordon,

I use an excellent commercial product called Total Recorder:

The Professional Edition (not the Standard Edition) has the ability to insert a file anywhere in another file:

Total Recorder insert file
So you would record your additional 20 seconds in a file and then insert that file at the beginning of the other file.

Total Recorder Professional Edition is not free, but is reasonably priced, imo, at $35.95 USD. I've been using it for all of my recording needs for many, many years — fantastic piece of software. As a disclaimer, I want to emphasize that I have no affiliation with this company and no financial interest in it whatsoever. I am simply a happy user/customer. Regards, Joe
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Gordon_AtherleyAuthor Commented:
Thanks, Joe

This looks good, too
Joe Winograd, Fellow&MVEDeveloperCommented:
You're welcome, Gordon. Happy to help. Regards, Joe
Phillip BurtonDirector, Practice Manager and Computing ConsultantCommented:
You might also want to consider Goldwave.
Gordon_AtherleyAuthor Commented:
Thanks, Phillip
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