See URL, where the stream metadata produces <comments /dev/dsp="" ...
"/dev/dsp" is not a valid XML attribute name.

Version: 1.15.x
Severity: normal
URL: http://commons.wikimedia.org/w/api.php?format=xml&action=query&prop=imageinfo&iiprop=url|timestamp|user|comment|url|size|sha1|mime|metadata|bitdepth&titles=File:Frederic_Chopin-Trois_Valses_Op._64_No._1_Des-Dur_Piano_Peter_Gerwinski.ogg