Add zero to 1-digit tracknumber

  1. You can set the tag-field TRACK within the file to look like what you want, ...
    then rename the file with the converter "Tag - Filename".
    You can use the track numbering assistant from the Mp3tag menu.

  2. You can use the converter "Filename - Filename" ...
    Mask old name: %1 %2
    Mask new name: %1 $num(%2,2)

... and additionally there are some other ways to go in Mp3tag using other converters or using the Mp3tag scripting language in actions.

  1. You can see there for a set of ready made action groups for manipulating ...
    TRACK and TOTALTRACKS ...
    Adding "totaltracks" tag en mass?

DD.20140120.1644.CET