Combining tidal/future soundcloud playlists with hard srive

Hi all. Does anyone know if it’s possible to combine songs from tidal with those on my hard drive to make a combined playlist? This was possible on Algoriddim DJay so just wanted to know if I was to move to prime will this be an option as I fine it super useful.

Also Does the input on prime 4 and sc6000 support other languages?

Thanks in advance

I dont think so but is a good idea