mp3 files not working on Acekard2i AKAIO 1.5

I Don't know what happend, on the 4.18 firmware i could play mp3 files but ever since i upgraded to AKAIO 1.5 it won't play it just says unknown file
could someone help me out here please???

DSOrganize.Look it up.

the files for movies and music is not in firmware 1.5

Use Moonshell. I don't believe either the official firmware or AKAIO can natively play standard media files.