Hi,
I’m glad to announce the first release of id3lib-ruby. It’s a project I
started some time ago and thought someone else may find useful, so here
it is 
http://id3lib-ruby.rubyforge.org/
== Description
id3lib-ruby provides a Ruby interface to the id3lib C++ library for
easily editing ID3 tags (v1 and v2) like with pyid3lib. Because the
extension is based on SWIG, already most of the features of id3lib are
implemented.
== Features
- Read and write ID3v1 or ID3v2 tags
- Simple interface for adding, changing and removing frames
- Quick access to common text frames like title and performer
- Custom data frames like attached picture (APIC)
- Pretty complete coverage of id3lib’s features
- UTF-16 support
== Installation
Installation through Rubygems:
gem install id3lib-ruby
Note that you need to have id3lib installed as id3lib-ruby is only a
wrapper library.
== Usage
require ‘rubygems’
require ‘id3lib’
Load a tag from a file
tag = ID3Lib::Tag.new(‘talk.mp3’)
Get and set text frames with convenience methods
tag.title #=> “Talk”
tag.album = ‘X&Y’
tag.track = ‘5/13’
Tag is a subclass of Array and each frame is a Hash
tag[0]
#=> { :id => :TPE1, :textenc => 0, :text => “Coldplay” }
Get the number of frames
tag.length #=> 7
Remove all comment frames
tag.delete_if{ |frame| frame[:id] == :COMM }
Add an attached picture frame
cover = {
:id => :APIC,
:mimetype => ‘image/jpeg’,
:picturetype => 3,
:description => ‘A pretty picture’,
:textenc => 0,
:data => File.read(‘cover.jpg’)
}
tag << cover
Last but not least, apply changes
tag.update!
== Planned
- win32 binary gem (with id3lib included)
Cheers,
Robin S.