I think there are ways to use self hypnosis also, to allow your parts to communicate with you. Check out a book from the library on self hypnosis, and see if you agree.

Journaling is a good way to allow parts to speak out. Drawing, coloring, making crafts such as collages or working in clay are also some ways ppl use to allow expression by their "others." Almost any of the arts can be used, if it suits you. Other activities can also help relieve tension and anger. (Sports come to mind.)