All I can tell you is that the Hear Music store in Santa Monica, CA has a very nice selection of jazz and world music. And, this particular Santa Monica store did one thing that Tower and Virgin and even Amoeba never did: they let you rip open any disc in the store (except box sets) and listen to it on the spot. They've moved beyond that and now they have every single disc in the store digitized and available at the listening stations on command. That's more that can be said for Tower, which has maybe half (if that many) of their discs in their database.