[procella]

Thanks for these replies.

My problem is that I can't really decide often if it's lossy when it comes to FM. FA is clear but I guess not enough to be sure about it. SA cutoff seems to be a problem. Didn't think much about that sharp line. Was looking too much for bricks and holes, probably.
But I have still some questions. How could mixing FM and mp3 result in a signal above the cut when they both cut at around 16 Khz (somewhere 'Five' wrote that FM and TV cut like that)? Or doesn't this count for broadcast over the air?
And would the cutoff line look much different if a DAT and no mp3 was in the lineage?