WMA to M4R Converter - Easy to use
If you happenly want to add ringtones for iPhone, I will recommend wma to M4R Converter, which is an easy-to-use yet powerful software and helps you convert wma to m4r with high quality and superfast speed.

The guide below descibes how to convert wma to M4R:
Step 1: Download and install WMA to M4R Converter.
Add wma file- Click "Add files " button to add wma file. Only one song can be chosen at one time.

Step 2:Customize the music duration- just set exact start time and end time of the segment you want or drag the time axis to set.
Step 3: Output settings- Click "Browse" to choose the output folder to save wma to m4r file.
Step 4: Click "Import" button, the WMA to M4R Converter will start the converting wma to m4r process at once.
Step 5: The finished converting wma to m4r status shows as the following picture:

In order to ringtone your iPhone and assign an unique iPhone ringtone for acquaintances, just try this WMA to M4R Converter, you won't regret it.