I had a similar experience, my fiancee and I were looking at a house, and stashed away in a side room in the basement were at least 3-400 vinyl albums. I didn't have time to look through, but the house was 75 years old, and it's clear none of the albums had been touched for at least 10 years or so. We weren't really interested in the house, but I'm still contemplating contacting the seller to see about taking that vinyl off his/her hands. Who knows what you could find in there, and what could be easily cleaned up and enjoyed for years.