You could use Convert -> Autonumbering Wizard and set your TRACK with
Begin at tracknumber: 31
Then use something like
$num(%track%,2) - %artist% - %title%
Or you could try to add your start value manually to %_counter%
You could use Convert -> Autonumbering Wizard and set your TRACK with
Begin at tracknumber: 31
Then use something like
$num(%track%,2) - %artist% - %title%
Or you could try to add your start value manually to %_counter%