I used to live in Kunming before moving to Hong Kong, so I enjoy listening to a Kunming based radio station that streams over the net in high quality:
http://www.surfmusic.de/radio-station/fm-95-4,12714.html
Besides the moderators speaking quite standard 普通话, it is often funny to hear people calling in and speaking 昆明话 dialect. Even ads are sometimes in a distinct local dialect.