is capetown a good city for this stuff? might be going soon
There's quite a few record/CD shops- start off at CD Warehouse on the Waterfront and then ask the assistants there as well as picking up leaflets about gigs and whatever. There's a chain shop upstairs in the mall there as well. Always worth looking through any shop as often the stock is years old and you can find some real gems, much to the staff's amusement usually. It's mainly CDs, lots of mixes like hint says.
There's (or was, 2 years back) a dance music specialist on Green Market Square, downstairs in a shop, lots of Dennis Ferrer and that sort of stuff. I can't find it online and cant remember what it was called tho, sorry.
Um check out Woodstock and Observatory as areas that are really good - there was a great second hand shop in one of them but cant remember which now. Ask people who you see - it's pretty obvious who to speak to, hip kids stand out a mile - cos it's quite hard to find out stuff; there isn't any major kind of Time Out or anything.
Feel free to PVT if you got any questions.