From this site:
http://www.nomadness.net/modules.php...+Jukebox+1#top
Can the NJB1 appear as a drive letter, mass storage device etc.?
Basically it cannot appear as a drive letter in Window's Explorer.
The Creative File Manager 2 software, although similar to Window's Explorer, is not the same and is stand-alone.
Notmad Explorer (
http://www.redchairsoftware.com/notmad) allows the NJB3 to appear as a device in Window's Explorer, but not a driver letter. Although you can drag and drop MP3's in Explorer with Notmad, you cannot copy files to it from within applications.
Equally the free Microsoft Plus Digital Media Edition will also allow you view it as a device in Window's Explorer, but the functionality is extremely limited.
Note, there are no 3rd party firmware or hacks that will allow this functionality either.
Also note that even if this functionality could be added it would fundamentally change the way the device works. If the Music Library were to remain it would necessitate that everytime files were added a scan would be required by the device taking an amount of time to check what files were present. If the Music Library were to be removed then the device would have to be navigated by folders and files instead.
If drive letter support is the most important feature for you then check the MuVo and MuVo² range of players which have this, albeit they use folder and file navigation