Hi rern,
Thanks for looking into this so quickly! The numeric values for M4A files now show correctly.
The album art "help" overlay nearly works - a long-press in the top zone brings up a "broken image" icon in the top-left, instead of the overlay itself. This seems to be caused by a missing "controls.png" image-file - I've ftp'd a copy of controls.png from this thread (resized to 230px square) into the correct location on my RPi, and it now works fine.
Thanks again for all your work with the add-ons feature and the enhanced UI - it's greatly appreciated. IMHO RuneAudio is by far the best audio OS out there, and your work is helping to make an excellent product even better.
Peace and friendship,
englishtim