MobiBLU is apparently working on a successor to its DAH-1500 digital audio player which measures a mere 24 x 24 x 24 millimeters and weighs only 18 grams (about one cubic inch and about 0.64 ounces). No word on capacity but the new Cube 2 should sport a two-color OLED display and modified controls to be set out in the shape of a cross.
Presumably the new Cube will keep its support for both MP3 and WMA formats and include an FM tuner.