Another piece of the Vancouver concert in 1980, uploaded by Steve Sparx -- as with my Jumbo Go Away/If Only She Woulda post a few weeks back.
I suppose it is a bit ironic, given my recent post of Dweezil discussing inferior music formats and flawed concert recordings, that I post so many of them here. But there is a value to them -- there will never again be a new Frank Zappa recording, and the ones that exist are precious even if they're flawed.
Though if you really want a high-quality Zappa recording, by all means buy a CD or FLAC release. (Or vinyl, if that's your thing.) His old albums are currently being reissued, and there are some rarities available at Barfko-Swill. And if you've still got a local record store, that's a great option too. (I was tempted by a copy of Thing-Fish and a ZPZ DVD at my local record store today, but money's tight and I still haven't finished listening to the last Zappa album I bought there -- maybe next time.)