You may or may not know but Big Finish have start dabbling with the use of SoundCloud. At the moment (October 2012) it is mostly for podcasts but they have posted one of the free podcasts that were on the main website in August 2011.
The title chosen is Cuddlesome which is a Fifth Doctor title that was given away with Doctor Who Magazine and is also a remake of an AudioVisuals title. Head over to check out! Or just click below to play! BTW – I have a soft spot for this as it is set in Brighton which is my home town!