Things not in the manual, but important

I have an 8G Clip+ with 32G card

Even though Fat32 seems to be used. Most MP3 players seem to follow a “SUBSET” rather than exactly.

Maximum Number of files allowed per folder?

Maximum Number of folders allowed?

Maximun ‘length’ of any One file, timewise?

Maximum size of any one file?

Maximum folder tree nodes?

Maximum number of songs or items in a playlist?