Functionality to change BPMs on the fly in an entire directory and its subdirectories.

The new functionality for changing BPMs works well from what I have tried. To go one step further, I think it would be useful to be able to change the contents of a directory and its subdirectories all at once (without having to load them one by one).

This would be especially useful for samples & loops (e.g. percussion, drums, etc.).

For example: all files with the same BPM can be used in DJ-Studio, but also in other audio & video editors.