How to make iTunes your default player for mp3, wav or almost any type of audio files.

1. In iTunes, click Edit > Preferences.

2. Click the Advanced tab.

3. Click the General tab that is located in the Advanced section.

4. Check the box for Use iTunes as the default player for all audio files. Click OK.

There have been a few times when Winamp has been the default player, and this box was checked anyway. I would have to uncheck the box and then recheck it and click OK to make this change.

With this setting enabled, iTunes should play all audio files it supports from now on.