But I have played (appropriate) vids for my brothers, and my mother, and for a friend who is potentially fannish but doesn't really have the time or Internet access for it. Basically for people who I think would appreciate the vids, but who don't have the kind of connections to see them themselves.

I phrased that question badly. I was trying to ask about people who aren't fans and whose behavior you can't vouch for. (Strangers, near-strangers, idiots, people with issues - you know the sorts of people I mean.) Basically, I wanted to know if you'd shown vids to people who were likely to turn around and, for example, send them to the music copyright holder, whether out of sincere but misguided enthusiasm or out of a genuine desire to cause trouble. It's just - I consider people I'm close to - for example, my Best Beloved - to be in fandom kind of by extension of my fanishness (like, they aren't fans, but they're part of the fannish extended family) and it didn't occur to me that most people would not see it that way.

Basically, if I'm not claiming a product as my own, or profitting off it, I have very little compunction about sharing it with individuals I think might be interested. Is this something that people get upset about? Because it's certainly not an issue I'm really aware of.

The short answer is: no, it really isn't much of an issue. And it's even less of an issue if you let the vidder know you enjoyed her vid. (Don't you love how deftly I'm inserting this subtle commercial for feedback?) Most vidders would much, much rather have feedback of any kind then have someone get all careful with permissions and such. The biggest problem, actually, is that for some vidders permissions stuff is just about all the feedback they get, which makes them really, really want those permission requests.