Nothing audio related, others with more knowledge will have to provide that. However, from a touristy standpoint, the UBC Museum of Anthropology - University of British Columbia is worth a look - great examples of early aboriginal culture. I don't know about this time of year, but the Dr. Sun Yat-Sen Classical Chinese Garden in China town is interesting (Vancouver has, I believe, the second largest China town in North America, so depending on where you're from that may, or may not, be of interest. Plus, great places down there for dim sum. Oh, and always, Stanley Park.
There is S.P.A.R.C. (Socitey for the Preservation of Antique Radio in Canada) in Coquitlam (the old Essendale site) 604-777-1885, www3.telus.net/radiomuseum/
The Radiomuseum in Bellingham WA is a must see!
If you have the time and a car go up to Cypress mountain and enjoy the view from the 1st. and 2nd. lookouts. On a good day you can see the new Port Mann bridge, Mount Baker, Olympic Peninsula and Vancouver Island. Than continue on to Horseshoe Bay and up Howe Sound! At night take the gondola up to Grouse Mountain for a drink or dinner and enjoy a spectacular view of the city (Fantastic!!!, to quote a well known local).