In this page you'll find links to download most of Urusei Yatsura related content.
Unfortunately, it's likely some of these links will die, so I'll try to give multiple sources.
: Complete music box 15CD in flac.
: DDL of the Complete music box + 2 other albums.
: UrusUrusei channel, A lot of Urusei Yatsura music and misc releases.
: Dr. Butte Fatman playlist, almost all UY music releses.
Not exactly download-able but I wanted to link these cool websites from the early internet.
: "CG shrine", fan-arts of Lum.
: Fan-site, I don't remember how to go pass the front page.
: The Urusei Yatsura website, active since '96!
: Website in Japanese only, but it's worth digging through.
: A few cel of Urusei Yatsura.