For a good start with Cajun, Creole, and zydeco music, listen to WWOZ-FM, 90.7 FM locally, on Sundays, from noon to 2:00 pm local time (US Central Time, GMT -6). Charles Laborde does programming.  He is a Cajun, native of Marksville, LA.  He’s got a great collection of music.  Charles knows the music and the culture and selects the best range of music, from old time to string band to country-style to modern.  I engineer shows and from time to time I substitute program. Occasionally you’ll hear Cajun, Creole and zydeco on other shows, but this is the only one devoted entirely to French music from Louisiana. WWOZ is a listener-supported, community broadcaster and accept contributions.