I have a few discography type music torrents but I would like to add more albums to the same torrent

Does anybody know where there is some step by step information to achieve this I have tried adding the new album to the folder and re-adding to my torrent client but I just get Access Denied when trying to update on the Metal Tracker site

Any help much appreciated

1. Create a new torrent file
2. On the page of your torrent click-edit
3. Upload a new torrent file + add info in description
4. Download torrent file from Metal Tracker
5. Become seeding