I have been using one of the custom fields (Date 1) to store a date for each album in OrangeCD. By editing the HTML template (wish I had known about the supplied Template Editor earlier, as I initially did this using a text editor) I can get this to display correctly.

When I export this field to a plain text file for loading into Excel, I get a huge number (e.g. 1794244608 for 5th December 2006). I can