This is not going to get fixed in the short term because the BBC have replaced this mechanism for downloading with one using client SSL certificate auth. See this thread: http://lists.infradead.org/pipermail/get_iplayer/2010-December/000315.html
As a result the iphone mode is now removed from the default mode lists as in this upstream patch: http://git.infradead.org/get_iplayer.git/commitdiff/12812f9fc974921f0d00864605ecae36eab6afba -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org