Did you just run into a file that has a digital signature from Recorded Books, LLC? If so, please read on.
You will typically see Recorded Books, LLC when double-clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the digital signature details for Recorded Books, LLC with the following procedure:
Here's a screenshot of a file that has been digitally signed by Recorded Books, LLC:

As you can see in the screengrab above, Windows states that "This digital signature is OK". This means that the file has been published by Recorded Books, LLC and that the file has not been tampered with.
If you click the View Certificate button shown in the screengrab above, you can see all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, etc. You can also view the address for Recorded Books, LLC, such as the street name, city and country.
Thawte Code Signing CA - G2 has issued the Recorded Books, LLC certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Recorded Books, LLC files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/46 | NewShortcut11_F6FEAF0EA54E4BDF9FCA88B16752D30C.exe |
| 0/57 | NewShortcut1_F4FD9C0EEE954F75BF1F96A939632550.exe |
The detection percentage is based on that I've gathered 103 scan reports for the Recorded Books, LLC files. 0 of these scan reports came up with some sort of detection. You can review the full details of the scan reports by examining the files listed above.
The analysis is done on certificates with the following serial numbers: