If you live in the UK, install "TV Catchup" (http://www.tvcatchup.com/), and you can watch BBC Alba, along with a whole range of channels on your PC, for free. And the program is free as well as the programmes.

(It seems to have gone down just now when I tried to open ity up to give a link - I hope that doesn't mean it's gone belly-up, it's a very handy facility.)