xp cmd rename

how do i get it to rename a bunch of files but cut part of the original names out?  if i have a bunch of songs ripped from a disc, and moot added his name to all the files how do i get rid of it using the shitty windows command prompt?

rename *moot.mp3 *.mp3

that doesnt work

Bitches don't know about my rename with Perl regular expressions

Usage: pren regexsearch replace

E.g. pren moot\.mp3 .mp3

Supports $n, options on overwriting and operation timeout, working on a limited set of files and simulation (no actual rename).

Will post if somebody interested.