It's very cranky.
I bought this device to play DVDs (ISOs). For some reason this is nearly impossible to do under normal Android apps. Here are the results so far:
Joe VLC: ISO tried to play, then croaked
QQ Player: tries to play, no menu control
Rockplayer2 -- plays ISOs, software only, video completely separate from audio.
Dolphin player: no ISO
ES Media Player: no ISO
FireAir Player: no ISO
MX Player: no ISO(?)
Super-HD player: no ISO
TVD Player: no ISO