Thats a nice flash drive. I have the first revision model of grom usb. That version in my oppinion has a few flaws. 1. if usb and aux audio are playing you will hear both. eventhough it has a software switch. the new revisions have a hardware switch. so when you actually hit usb you hear only usb. you click on AUx you hear only aux.
I have 320gb wd passport drive connected to mine. Had to format it to FAT to make it usable on multiple car platforms. Random play crashes after you exceed i think 1000 or 100000 songs.. cant remember. I also had a few issues with flac but the firmware update fixed it.. It is much louder and now i have 2 aux inputs in my x5. 1 for the grom - wd movie player and normal aux in from the rear seat entainment - Satelite dish.

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E53 06 3.0i

wishlist
Comfort Seats
speckdock 2.5

Mods
Air suspension - wip
skid plate replica - in box
OEM sunroof deflector
OEM bluetooth streaming
navi,dsp,tv retrofit - wip
Low prof roof racks
2 directtv satelite tuners
Grom audio usb2
quarter and back window sunshades
2 10"subs- boxes opposite sides/Alp MRP-M850
rear heated seats retrofit
rear footwell lights retrofit
remote window roll up