I find it a good background for me while I paint and I invite you, if you don't already to do the same and see how you go.
I will say now that some do have some bad language involved in them so if you are bothered by this let me know and I'll try to list which ones have bad language.
The only reason I say try is because I really don't notice it personally but I understand if you have children or it bothers you I will try to highlight which ones involve bad language for you.
I'll start off with a local one.
Next up a fairly popular one
Next up are a couple of new ones to me so not much in the way of opinion but I have enjoyed what I have heard.
As far as I can tell predominately 40k related and no bad language.
Predominately 40k and once again no bad language as far as I know.
Contributed by http://wargamerhub.blogspot.com/
I use to just watch battle reports in the background as I'm still learning and such but now I find these to be fairly entertaining while I'm doing painting/modelling and not to much of a distraction.