LP collection management...what do you guys do?

Aceto, try divorcing her. It will cost you much more. :-)

The method I used for keeping track of memos, reports, and the like, I called "Vertical Chronological Filing System". In other words, after using an item throw it on the top of a pile. This also works for CDs. What you use frequently naturally rises to the top of the pile. Every so often, throw away the bottom half of the pile.

This is not completely a joke...it actually works as well as any other system I tried. People were astonished that I could come up with memos in a few seconds ("let's see..down about 3 inches") that would take them an hour of searching through file cabinets.

i only have about 400 lps and i dont know where i would put another 400...but i would find a place. so no, do not sell off some of your collection. im 25 years old and i regret selling off some of my cds and video games when i was 12-18 to pay for other stuff.

tastes change yes but you will eventually come back down memory lane, listen to the lps and realize that you dont like the records for nostalgia sake but they are actually great records.

if you have any doubts whatsoever, do not sell.

"However if I need the money to fund current purchases it isn't too hard to weed a few things out. This is easier to do with CD's than it is with LP's because it's harder to sell LP's and get any money out of them."
-huh??
My experience is the opposite. Look for used CDs on ebay, people can't give them away. Recent vinyl releases are limited, one example Elliott Smith's XO LP sells on Ebay for $100+ regularly. I bought it new 4 years ago for 10 bucks. The fact the vinyl is limited new and used drives the price up. Most used music stores buy CDs at about $2 dollars each and sell for $6-8.00.
Anyway, Jsujo is asking if you sell your music (not asking about database software) I do not. Anything I have that would make it worth my time, such as Elliott Smith "XO", I want to keep and the LPs I would weed out would only bring in 6-10 bucks on ebay so it isn't worth selling. Although everything I have ever purchased was out of interest for the artist (or genre), even if it was a let down or I don't listen to it, it is part of my musical history. If you are somebody who buys LPs in bulk at the flea market to fill out your collection you may have loads of stuff you should sell. So yeah, I guess it depends.

"If you wanna find
Landslide by Fleetwood Mac you have
to know that I bought it for
someone in the fall of 1983 and
then didn't give it to them for
personal reasons."

I started cataloging my records and CD's (about 6,000 now)
but gave up (I got to about C I think) when I realized
that my new purchases were outracing my cataloging efforts.
Now I just keep my CD's in locked cabinets and hope
for the best.