Submissions How to Submit Your Music to NWCZ Radio. Attach your .mp3 file with metadata to include “SONG TITLE”, “ALBUM TITLE” and “ARTIST NAME” and email to NWCZRadio@gmail.com How To ADD Metadata. To ADD metadat using Windows os – Right click on file and select “properties”. Then click the “details” tab and fill in info. 2. To ADD metadata using “i-tunes (windows or mac)” – open the file in iTunes, right click on it and click “get info.” Click the “info” tab then fill in as much as possible, and send it our way!