Just use the forum's File Manager. Its description says:

"To attach files to your forum post, click the Browse button to find files, and then click Add File. Not all file types are supported. File types you can upload include images (e.g. png, jpg, bmp), media (e.g. m4a, mp3), and txt files. Click Done once you've finished adding files to your post."

However, pressing the 'Browse' button, the File Manager lists BiaB files as well AND allows posting such files.


Martin