Does sixtyforce output/input raw .fla files as per 'normal' n64 saves, and the sort that are most commonly found online?

If so, where can these be found? Are they a part of autosave?

Alternately, are there any repositories for .n64save files?

And, finally, does anyone know a way to avoid the scene in Zelda: Majora's Mask where the grave opens? It seems to continually freeze sixtyforce.