Based on the excellent TagLib C++ library, which is fast, full-featured
and mature. In contrast to other bindings, this one wraps the full C++ API,
not only the minimal C API. This means that all tag data can be accessed,
e.g. cover art of ID3v2 or custom fields of Ogg Vorbis comments.

Homepage:
https://github.com/robinst/taglib-ruby
