perl script to search cache for mp3

Hi,
    working at an isp we have a large cache (duh), so i hada to write a
little script to search the cache for mp3s (who can get thru a working
day without mp3?) was wondering how i would go about this...if anyone
had any ideas or if this has already been done? have been looking
through some logfiles and cant seem to find a pattern as to how squid
stores its objects. any ideas or pointers in the direction of a script
that someone has already written would be cool

--
Regards,
Ben O'Shea
Technical Support
Brisbane Internet Group
Mobile: 0416346437