Less than a year ago I found out about a relatively small website with short audio clips and background sound effects designed for fantasy tabletop RPGs (all the usual suspects were there, e.g., dragon roar, tavern chatter, spooky cave, sword clash...). The website was designed as a grid of icons, similar to the home page of a smartphone. The icons were somewhat realistic but still comic-book-like, perhaps like something out of Penny Arcade. I believe it was possible to mix two or more sounds by tapping them in succession.
Sadly, I've lost the URL and I can't remember the name of the website, or even how I came across it. Does anybody know which website this is?