The Audio product adds an extended type of File to ZOPE. When you upload a file it extracts metadata and puts it in properties for use.

In the case of MP3 files, the id3 tag metadata can be edited, and the new data will be inserted whenever the mp3 file is read out (rendered).

Since it inherits File, it supports large files efficiently in the ZODB (something like 0.01% overhead).

Currently, only looks for MP3 tag data, but will work with any kind of audio file.