Add Beats Per Minute to ID tag

[SwelterTheChef]

Hi,

am looking for some software that will calculate the BPM for all of my music tracks and add the result to the ID Tag for that track.

I have tried [commercial program removed] but that seems to crash out regularly and seems to be detecting a lot of my music at 250 BPM!

I am currently trying Abyssmedia BPM Counter, which works nicely but has the major failing of not being able to recurse sub-folders, and as I have a lot of folders by artist, with their individual albums underneath that means I have to click on a lot of folders to obtain the information I require, and it won't line them up either, you have to wait for one folder to finish before starting the next folder.

So I need a nice accurate BPM detector that writes the info to the IDTag, and is able to navigate subfolders automatically.

I await your recommendations eagerly.