FLAC – 'Free Lossless Audio Codec' – is a way of making sound files smaller without losing any of the content (unlike, say, MP3 which throws away information to help reduce the size in the hope that you can't hear the difference…)

Because it's lossless, it's a favourite of a website for people who tape concerts and then share the results.

One such concert was the one Kraftwerk played at Tribal Gathering a few years ago: the BBC broadcast part of it live.

Thanks to looking for something else, I can now say that the .flac file containing Trans Europe Express has, somewhere inside, the bytes 70 61 73 74 61 (in hex), or, in ASCII, 'pasta'.