Internal memory is basically the same as card memory when using MSC mode. Using card memory in MTP mode can at times cause issues. Some protected files(MTP mode is required to transfer protected music)
such as subscription music might only play properly from internal memory, and not from card memory.
Most people though don’t use protected files. I usually buy 4GB Sandisk players.
MSC mode treats the player and the card in it as if they are two separate usb flash drives when connected to the pc. When the Clip+ is operating though, it combines both internal and card memory to form one seemless database.
