That is probably the only way to get those sounds because I've never seen anything like that except on FFWA.org, but that site was crippled a year a go and is just getting fixed. Its lost most of it's info. So sad.
Thats a nice sight, but I though we were looking for the sound effects it makes when you use an item in battle or the sound of Cloud's sword slashing an enemy.
EDIT: Now I can't stop listening to all of the FF7 songs! I'm possed with "Who Am I"