If you have been using Power Music Reader and purchase Power Music App, you can transfer your songs and playlists using the Backup and Restore feature.
In Power Music Reader, tap "Backup and Restore" in the main menu, then tap "Create Backup". This can take a while if you have a large number of songs in Power Music Reader.
Once your backup has been created, select it from the list and tap "Export". Select "Copy to Power Music". Power Music App will then open and inform you that the backup file has been imported.
In Power Music App, tap "Backup and Restore", then select the backup file you just transferred and tap "Restore".
This process will transfer all songs and playlists including author and category information.
WARNING: If you already have any songs in Power Music App, they will be deleted as part of the restore process.