Just a quick search for this information, I typed in omoide and frusciante into google and this came up:
http://www.geocities.com/erincarlson/john/drugs.html
It's really interesting, it says that Omoide and his solo albums were on the same label.
But I recall a few years back on a Boredoms discussion on this Livejournal (...) message board someone bringing up that John played Omoide for his other band members and such every day to the point of annoyance and that they were one of his favorite bands, which is hilarious.
Anywho, read that article though, it's uh.. interesting.