Nextar MA99T - Manual (Page 14)

How to play
At first, you must enter into System setup and setup the "DRM Time", set
it to current time, otherwise the DRM music can't play accurately.
After setup "DRM Time", you can go back to music mode to play and listen to music.
Delete file in (stop submenu) mode
F i l e s c a n b e d e l e t e d u n d e r t h e i r r e s p e c t i v e m o d e s :
“Delete all” will delete all files of the current mode under the current directory. (For example, only ....
music files will be deleted if you choose Delete All under the music mode).