What kind of symbol to use? (Audio connector)

for Eeschema you can use this

For the footprint I think there is nothing ready ATM…
you may found something at this repo:

http://smisioto.no-ip.org/kicad_libs/modules/mod_conn_av.zip

But the best is what @Rene_Poschl suggested… make your own fp connector and may be contribute to KiCad github repo :smiley: