There are several versions of ID3 tags. Creative MediaSource currently supports ID3 v1.1. The ID3 tag information may not show up correctly in Creative MediaSource if MP3 files created with 3rd party encoders/players are encoded with ID3 tags other than ID3 v1.1.
If your MP3 files are created with iTunes, which saves the ID3 information in ID3 2.0 format by default, to play or organize these files in Creative MediaSource, you will need to convert the ID3 tags from v.20 to v1.1 in iTunes.
To convert ID3 tags in iTunes, go to iTunes, then click on the Library tab in the left windows, and highlight the MP3s you want to convert, then right click on them, select Convert ID3 Tags in the pop-up windows. Select ID v1.1.