aacPlus decoding is broken
Trying to listen to the radio with aacPlus results in reporting 22050hz instead of 44100hz, so the audio quality is worse
you can try http://www.calmscape.com/index.php?option=com_wrapper&Itemid=8 with vlc and with mplayer/gxine -- they report the audio is in 44khz and so the quality is good.
there is some info here: http://ubuntuforums.org/showthread.php?p=293982