Portland Maine

Hey Folks--planning a trip to the other Portland and was hoping to get some tips from the community seeing as you are a cultured crew....suggestions for all of the following very welcome!

Record shops that carry new/used vinyl
Hi End Audio Shops
Music venues (jazz, acoustic, singer-songwriter, classical)
Restaurants (I hear the food scene is pretty good--where do the locals who enjoy a good meal go?)

Headed there in the spring or early summer....thanks for sharing!