How to play more mp3 files (Sony 512MB WALKMAN Flash MP3 player, Pink)

[qanda]This thread is about the Sony 512MB WALKMAN Flash MP3 player, Pink. Click here to see full specs[/qanda]i’d bought a sony mp4 ipod with video. one time im formating it.
this time worked fine and showed 234mb of memory space (before formating 512mb space).
medial files (mp3, mp4) stored many. but playing only one.
how to play many files & recover my previous memory space.

i’d bought a sony mp4 ipod with video. one time im formating it.
this time worked fine and showed 234mb of memory space (before formating 512mb space).
medial files (mp3, mp4) stored many. but playing only one.
how to play many files & recover my previous memory space.