No built in memory, normaly no 32gb card with it, only an USB 2.0 adapter microSD to USB which look like an USB flash drive (not an repair card).
32gb card isn't anymore in description.
Owning it and using it with JDS Labs C5, it's really a great combo.
(C5 adds lots of soundstage, while decreasing power consumption (less chips used in Line Out), I kinda use 25% X5 battery for 8hours playing)
M3u support will be add soon, FiiO is working on...