Okay, I did figure it out (simply change the password to blank and it no longer asks for a password -- at least smb4k doesn't).
I think it would be good if each application would request passwords from a different wallet, since some of my passwords are not very sensitive, whereas others might be...
...though I don't see the problem with a empty password. The user's files are in theory protected and if you want extra security you could use an encrypted partition.