Apple Logic Pro 7 - Manual (Page 291)

Chapter 6 Logic’s Mixing Facilities 291
Stereo Mode
You can select joint stereo or normal stereo mode. Depending on the original file, these
settings may (or may not) offer any audible difference. Experiment with both settings
to determine your preference.
Write ID 3 Tags/ID3 Settings
When the Write ID3 Tags option is enabled, ID3 tags are written to the file. These tags
can be edited/configured in the dialog launched via a click on the ID3 Settings switch.
All entries are made by double-clicking on the desired Content field(s) to the right of
the corresponding ID 3 Frame entry, and typing in your text.
Add to iTunes Library
The Add to iTunes library option adds the encoded MP3 file to the iTunes library.