It appears the download for Torchwood The Dead Line works for the UK and Europe, but not for all the USA (some people are having issues)! Whats more the BBC download is only open for a week, so here is a download for every country, and its there forever (I hope
Its a .rar mp3 file. If you can't deal with a rar file, google for the free download!
Who can't access the BBC MP3 files, and what country are you in?