I need these info before purchasing it a J3

[djfonplaz]

Hello to all! About Cowon J3, I'd like to know :

1 - is it possible to manage files directly from the device? (I mean, I'd like for example delete mp3 on-the-fly, without connect it on pc every time);
2 - is it possible to manage playlist? (As m3u for example) from the device?
3 - is it possible to play ALL songs on the device in random mode? (also if the songs are organized in different folders?
4 - if I put an additional microsd of 32gb or 64 there are problems? I mean, maybe the system cut gb? Can I move files from MicroSD to the Player's memory from the device? Or only from the PC? And which MicroSD do you suggest?

Thanks