it is setting a cookie when you download the m3u8 file and it is needed to download the ts files.
here is a python script I wrote you can download the video with.
http://pastebin.com/NcBdfhf8
save it as downloadM3U8.py and then this command should work.
Quote:
python downloadM3U8.py -i "http://streaming.itunesfestival.com/auth/eu1/vod/20140916/v1/1200_256/1012882_blondie_vod.m3u8?token=expires=1411013704~ access=/auth/*~md5=3c6adef62ce0abe7fd8bb84bcb0b7e37" -o video.ts
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The video itself is unencrypted.