Tagtrum has released version 3.5 of BeaTunes (http://www.beatunes.com), the iTunes add-on for Mac and Windows. The new release offers the option of a Spanish user interface.
BeaTunes can detect various types of metadata, such as beats-per-minute and musical key, as well as find and fix typos and inconsistencies such as misspelled artists and rarely used genres. It analyzes the color and tempo (BPM) of your songs, intelligently creates playlists of matching songs, corrects your iTunes Music Library (typos, wrong genres, etc.), lets you blog about your playlists and more.
A seven-day demo version is available at the product web site. Registration is US$34.95. beaTunes requires Mac OS X 10.5.8 or higher.