[Kai Winters]

I use the Samsung Galaxy 5 media player...same as the Galaxy S,etc phone but wifi only...I have to set my Galaxy player to "usb"...I can set it as "usb", media player, or "Kies" device...in order for Calibre to see it as a drive.
I seems similar in use to the Galaxy Tabs I've played with at Best Buy.
So I suggest headbrother check to see if the same settings are available and if so change to "usb".

Initially when connecting it to my computer and starting Calibre it did not see it. Once I changed the setting to usb Calibre saw it as a basic drive...my computer also saw each drive and assigned a letter to them...the internal storage and the micro sd card I installed...and the connection problem was solved.

An interesting aside. Prior to adding a micro sd card to the player, Calibre would send books to the internal storage as default. Upon installing the micro sd card Calibre now uses it as the default storage and gives me no option to use another...or I do not know how to set the internal or external drive as the default storage.
It does not really matter but I would prefer to have control over the storage location.