It's a fact: Austin is getting more expensive. Especially for renters, the cost of living here is just going up and up. When the economics of urban living change, the social composition can change as well. Unfortunately for Austin, many musicians are being priced out of the Austin market.According to NPR, "Austin is one of the fastest-growing cities in the country. Young people are moving there in search of its plentiful sunshine, freewheeling lifestyle, hi-tech jobs and vibrant music scene. However, more and more musicians find they cannot afford to live in the self-styled "Live . . .