Thanks Timmeh, this is good to know, I was trying both Windows and Linux-style UNC paths with no success.

Is your Sandisk key formatted as NTFS? My 512GB SSD USB external drive is, and nothing is recognized when I plug it in. In my case, all of my songs are under a subdirectory name (music). The drive also gets quite warm, as if the AA is supplying charging current to it :-(. I checked the SanDisk 128GB CZ43 Ultra Fit, and it comes formatted as FAT32.