Accessing folders on my smartphone's micro-SD

Hello everybody, and thanks to the programmer for this awesome software.

I have my personal music library copied on the microSD of my smartphone, and would like to load it on Mp3Tag to execute a mega-ID organization.
Anyway, if i try to select the directory with the SD card inserted in the phone, MP3TAG says me that the folder is not valid.

Please, does someone know how to solve this?

Thanks a lot!

How do you try to do that?

You can try to mount the folder as drive in Windows.
Also, you have to set the USB mode to file access and not MTP mode.