Aristocrates – Well LifeStream could possibly help because it works you over pretty well, exercising every part of you. So I suggest you try the following first – and give yourself time. http://dreamhawk.com/body-and-mind/the-arm-circling-meditation/
I would also suggest exercising the voice directly by using the following:
In this exercise we explore the use of sound. To make different sounds we need to move not only our throat, but also our trunk and even limbs in different ways. Sounds also evoke feelings and move or exercise them. Just as many of us do not move our body outside of certain restricted and habitual gestures and actions, so also our range of sounds may be quite small. So for several minutes explore making sounds. Start by taking a full breath and letting it out noisily with an AHHHH sound. Do this until you feel it resonating in your body and change to a strong EEEEEEEEEEE sound. Then try MMMMMMMAAAAAA.
If you are doing this exercise for the first time, that is sufficient for one session. As your sound production improves though, and you begin to enjoy it, explore making all sorts of happy sounds; different sorts of laughter, proud, childish, funny, etc.; angry noises; animal and bird noises; sensual sounds; the sound of crying or sobbing; natural sounds such as wind, water, earthquakes; make the sounds of different languages and different situations such as a warriors chant, a mothers lullaby (without real words, just evocative sounds), a lover’s song, a hymn to Life, or even sounds about birth and death; and just plain nonsense noises. Don’t attempt to explore all these different types of sound at one session. Just choose one and explore it until you can feel yourself limbering up in it and getting past restricting feelings such as shyness or feeling stupid. Those are the walls of restriction.