Getting rid of errors

I've been getting an odd error ever since I started wanting to play anime subs with gmplayer. Specifically - this error says:

Requested audio codec family
[mp3] (afm=mp3lib) not available
Enable it at compilation.

So, I did a little searching and found that there is a very easy fix for this! Simply go into your gmplayer preferences and select the Codecs and Demuxer tab. From there, change your Audio codec family to FFmpeg. That's it! No more annoying error!