Are ID3 tags only available in MP3 audio format?
Yes. ID3 tags were designed with the MP3 file format in mind. ID3v2 tags will break formats which are container-based such as Ogg Vorbis and WMA. Here is some information on specific formats: • ID3 tags work in MP3 and MP3pro files • WAV has no tags and WMA has its own tagging format, which is specified in the WMA spec, available in the MSDN (which unfortunately, basically does not allow Open Source implementations) • Ogg Vorbis uses “Xiph Comments” (same as later versions of FLAC and Speex), which are embedded into the Ogg container. You can find information on these in the comment and container specs on www.xiph.org • AAC uses yet another tagging format, which does not at present have a published spec as of 3/1/2006.
