QUOTE (evergreen1 @ Apr 23 2012, 14:05)
i created a column. in the customize col, i put the following. value>$len
Numeric > selected
i didn't get the result. i wanted to get a number such as 25,24,26 etc on the new field. guide me plz
Leave field "Sort by" empty, fill the field "Value", as ohrenkino told you.
If you want to learn how column customizing will work in general, then look through the already made column definitions.
Again ... please read the manual: http://help.mp3tag.de/main_viewcolumns.html
... or simply press [F1] if you got the feeling to ask somebody.
Mp3tag offers context sensitive help in most cases, especially in dialogs where a help button is available.