I've e-mailed the author of TunerFree MCE, Martin, to inform him of this proposal, and also to let him know that much of ITV's content is available in Brightcove streamable Flash format from STV's website: stv.tv Video | Home (I got the tip-off for this from the website of the "Caught Up" Firefox Add-On: Improve ITV Player Catch Up — Caught Up Firefox Add-on ).
(BTW, as far as I can see, Brightcove content is streamable only in Flash format, through the embedded player or through partners' websites: Brightcove Online Video Platform | Online Video Publishing and Brightcove Online Video Platform | Online Video Distribution . I've tried using Safari's Activity window and Firefox's Live HTTP Headers add-on to locate the raw FLV file but have been unsuccessful - the links seem to be somehow obfuscated.)