Thanks for the information.

I currently use FooBar 2000 (with the BPM add-in) for this purpose by dragging and dropping a list of files from MMW5 to FB. After the analysis is complete, I press update in FB2000. The BPM details typically show after a short delay in MMW5 because I am using a folder (Downloads) which is scanned continually. However, a rescan or restart is sometimes necessary!

Typically, I run anything from an album to a full "discography" of tracks in one hit. Not too certain of the accuracy.

In my workflow, I do the BPM step prior to 1). setting tempo and 2). organising the files from "Downloads" to "Music\Artist\Album..."

Will try Mixxx and see how it compares.

There is an open source free project that has created a BPM detection utility. It's called Mixxx, and you will find it here: https://mixxx.org/

It's the most accurate I have found, but it is not 100% perfect. It is close to it though. I find that I sometimes have to tap my own beats to update what it calculated, but it is the best I have found.

Some online music purchase shops enter BPM in tags for you (www.junodownload.com comes to mind), but most do not and leave it as a task for you to complete.

MediaMonkey does not offer a way to detect BPM, but this open source project that is available for Windows, Mac, Linux and has shared source code that may help.