Regarding downloading the packs again from Yamaha MusicSoft.
You should be able to do this without having to pay for them again assuming that your account is still active!
Log in to the site and then select 'My Account' (this page opens for me as soon as I log in).
On the left of the screen you should see a list of options under the heading 'Account Dashboard'.
Click on 'My Library' and a page should open showing all your purchases with the fourth column showing the download status.
Some content can only be downloaded a limited number of times and if you have reached the limit, the Downloads column will say 'No downloads left.' For items that you can download again, the column will show a clickable box saying 'DOWNLOAD'.
If for some reason you can't download your packs, you should contact the website by telephone or email.
Regards
Ian