It’s no secret that the iPhone is a huge success even in its current, highly-breakable, poor-signal-if-you-hold-it-normally incarnation, and like any other popular phone, people want custom ringtones for the thing. It’s not that the built in ones are crappy–well, it’s not just that–but more that we want to have something personalized, something that says something about us. Or, at the worst, we want to blare our favorite MP3′s ad-infinitum when we receive a call. But whatever your reason might be, there’s a single truth worth being conscious of: Apple’s iTunes store will bend you over and repeatedly rape you in exchange for the privilege of using music you already bought and paid for as a ringtone. Frankly, their fees are ridiculous, and we think you should avoid them wherever possible.

Luckily, that’s very possible thanks to a free downloadable app called iRinger, which will allow you to convert almost any audio format you can throw at it to an iPhone appropriate ringtone that’ll work with any version of the device, included the much-maligned (yet celebrated) iPhone 4. There is no application to install–you simply download the executable and run it. In my tests I found the app speedy, easy to use and virus free, though as a precaution I do encourage you to always perform a virus scan on any executable file you download from absolutely anywhere before you run it. You can never be too safe, after all.

The process is pretty simple. Open the program, click “Import,” and your music will appear on the timeline. By dragging the “In” and “Out” sliders at the bottom right of the app window (it’s a small app window, you can’t miss them) you can select the portion of the song you want to use as your ringtone. When you’ve got the clip you want to use (up to 30 seconds in length, which is the maximum the iPhone supports,) simply click “Export,” browse to the file location where you want to save the ringtone, click the checkbox that says “also export to iTunes,” and click go. In about 10 seconds your new ringtone will both save to the folder you specified and add itself to iTunes, making it quick and easy both to sync to your phone and to email your ringtone to friends, family, and of course to Steve Jobs, along with a note that says “Neener-neener-neener, I still have my $1.50!” Or something like that.

Software: iRinger

Price: Free, though they do ask for a donation if you like it.

Rating: Highly recommended if you prefer an app on your PC vs a web based solution like Myxer.

Download: iRinger