It is unreasonable for the software vendor to impose the task of converting a large mass of files (one by one!) on the users, especially within such a limited time frame. Most users have hundreds, thousands, or more such files to go through. As things stand, a very large amount of music is certain to become lost. A freeware convertor would obviate this particular concern. Very easy to implement, too; just don't disable the export and print functionality anymore in the main application after the "evaluation period" expires.