Originally Posted by cybersaga
I used My MP4Box GUI to demux the file, and it gave me an AAC file that played just fine in Winamp.
Here's an example of how to do that with the command line: http://sergey.marechek.com/blog/2012/07/15/241/
The "problem" file does
play with VLC and foobar2000, but not with my Winamp.
I have other lossy M4A files that can be played with Winamp.
So maybe the file is "out-of-spec" in some way that Winamp will not deal with, or the Winamp decoder is inadequate.
But don't hold your breath waiting for any improvements or changes to Winamp's plug-ins from the current owners: Radionomy is worse than useless.