Load a single .shred or .psarc files:
https://shr3d.app/app/?https://shr3d.app/psarc/Green-Floyd_The-Dark-Side-of-Pepe_v1_0_p.psarc

Load directly into an arrangement:
https://shr3d.app/app/?https://shr3d.app/psarc/Green-Floyd_The-Dark-Side-of-Pepe_v1_0_p.psarc|Bass

Load a whole song collection:
https://shr3d.app/app/?https://shr3d.app/rarecollection/urls.txt
It works by providing urls.txt, see rarecollection/. The files in cache are used for filling the song list without having to load full song files.