Sony Ericsson W31 S Basic Manual page 87

Press j to select "Multi folder,"
5
and press p (select).
Programs are saved in "Multi folder" of the data
folder.
In some cases, you may not be able to save a program because of
copyright protection.
Programs cannot be saved if a restricted play-back period, timeframe
or count is met.
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Ｍｕｌｔｉ ｆｏｌｄｅｒ
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