Import a WMA audio file into iTunes so that you can play it on your iPhone. When you import the file, iTunes automatically converts it to a format compatible with iOS devices. Once you've imported the file, transfer it onto your iPhone to begin listening to it.
Import into iTunes
Step 1

Click File on the main menu in iTunes and select Add to Library.
Video of the Day
Step 2
Browse to the WMA file you want to convert and then double-click it.
Step 3
Click the Convert button to confirm you want to convert the WMA file and import it into iTunes.
Transfer to iPhone
Step 1

Connect your iPhone to your computer and then select it on the list of devices in the top corner of iTunes.
Step 2

Click the Music tab on the left of the screen, place a check mark in the Sync Music check box and then click the Selected Playlists, Artists, Albums, and Genres radio button.
Step 3
Select the converted file and click the Sync button to transfer it onto your iPhone. After you sync the file onto your iPhone, it appears automatically in the Music app.
Tips and Additional Information
- If you'd prefer to convert the file outside of iTunes, the iPhone is natively compatible with a number of different formats, including AAC, Protected AAC, HE-AAC, MP3, MP3 VBR, Audible, Apple Lossless, AIFF and WAV. You can convert your WMA file to any of these formats, import it into iTunes and then sync it to the iPhone. Free conversion programs for Windows computers include Format Factory, fre:ac and Any Audio Converter.
- There are also a handful of free audio apps available for the iPhone that enable you to play WMA files natively. These include OPlayer Lite, VLC and KMPlayer.