The Qi Library is a members only product. It appears you either do not have access, or you are not logged in.
The Library section is an area in which subscription members can easily access and stream all The-Qi-Store products for 21€/month (+VAT where applicable). If you wish to get a full access membership you can subscribe to a monthly/yearly plan.Members have unlimited access to all current The-Qi-Store products.
If you wish to buy single use products you can find them in the store section.