WMA to M4R Converter-- easily convert wma to m4r
Ideal Way to Change WMA Files to M4R Files
WMA to M4R Converter, a professional conversion software, provides powerful converting functions to make iphone ringtone for iphone users. It can convert video formats such as AVI, MPEG, WMV, DivX, AVCHD, MKV, RM, MOV, XviD, 3GP, FLV, audio formats such as WMA, WAV, AAC, MP3, OGG, AIFF, to M4R iphone ringtone. What's more, if you just love a clip in a music file, this converter helps you set exact start time and end time of the segment you want and turn it into iPhone ringtone.
Step-by-step guide to convert WMA to M4R format
Step 1. You need to add a wma file you want to set as iphone ringtone into the software by clicking "Add File " button. Before this, you need to click "PC to iPhone" button to get access another window.

See the picture below, here you can above the music. Firstly click Play button to pre-listen to the added music. Drag the two sliders or change the number to reset start time and end time of the music. You can exact your loved clip and turn it to ringtone.
Step 2. Now set Local Output File tag. The defaulted storage path is D:\My Documents. You can keep it or reset by clicking "Browse" button.
Step 3. Connect your iphone to pc and check "Export to iPhone" to transfer the converted file to iphone directly. You can also save the file to hard disk. Then click "Import" button to convert wma to m4r.
OK, you have known how to change wma files to m4r files with WMA to M4R Converter. Have a try. You can set any video or audio file you like as your iphone ringtone.