After a few hours spent with noobs and partitions without success I gave up.
Dante, I did copy your files to /OS folder and noobs installer done its job. So I had two options to choose on boot: OpenElec and Runeaudio. Too good to be true . OpenElec worked ok (it was some old version but no matter) and Runeaudio did not. If I remember I just got black screen on TV and that was all (I tried it on Raspberry Pi B+).
Then I was trying to put newest versions of both operating systems (OpenElec and Runeaudio) on USB stick partitions and setting noobs to run OS from USB stick, but without success. So I am switching SD cards till next attempt.