Well, I think I have my answer…
I was reading reviews on the Clip+, and this one had the next fragment:
(…) the Clip+ will integrate content on the card with your onboard music library, so you don’t have to access the two separately. The exception is when you use SlotRadio or SlotMusic cards, which are segregated from your library since they are both organized in a very particular way (…)
Solved!
