Google Search – How to Find MP3 Files

Google don't want this as a service as they have just released a new music service. However, there is a service http://www.g2themax.com/ that allows you to play mp3 files stored in Gdocs. But Google may have blocked this.

Filetype searches only work for specific types on Google.

Have a look at the "Advanced Search" for details.

Otherwise, you need to put the query in quotes to try and stop Google from being too clever! This will of course return more than you want as it searches for the text as well as the URL.

You are right that inurl and filetype ignore the period. A quoted search term though will take it into account.