Your licensed tracks live in the Library tab of your account, ready to download in full quality.
Download your files
Open Library and download each licensed track as WAV or MP3 - the clean files, not the watermarked preview. You can also grab the license document for any track from there.
Active vs inactive
A track shows as Active while its license is current. If it is Inactive, its license has lapsed and you will see "Inactive - re-license to download" - re-license it to download again.