To date, I've been able to get back an answer to a "DIR" command, but I can't seem to get the VMUSIC2 to properly indicate when an audio file is done playing (I don't even get the command prompt back).
I thought that perhaps I'd have to upgrade the firmware, but it gives "Bad Command" when I try to "FWU" it.
On the other hand, I seem to have no problem playing back files using "V3A" or "VPF".
UPDATE: It turns out that my firmware is so old (Ver 01.12) that it doesn't even have the FWU command...I'll have to ask Vinculum to see what I can do about upgrading the firmware.