theres several methods...

1 of the 2 is

$left($nopath(path/filename.mp3),-4)

$left command or $right command either only shows you the Nth requested or erases the Nth requested.

Then $remove($nopath(Path/Filename.mp3),.mp3)

:P Theres even about 7 more ways to do it $regex being another method.

Code:
if $reality > $fiction { set %sanity Sane }
Else { echo -a *voices* }