While build 270.24 is simmering in the hands of testers, work has been going well toward the next build to come after that:
The path selection uses the same code as Asus wrote for the Media Server page - i.e. you can navigate through your plugged disk folder trees to select the directory you wish to export.
The path selection uses the same code as Asus wrote for the Media Server page - i.e. you can navigate through your plugged disk folder trees to select the directory you wish to export.