How can I add a MSC device in the 1.3a nightly builds?

Hi
can anymone tell me how I can get a connected MSC device appear as a device in Songbird 1.3a?

Note that on my laptop, I have deactivated all automatic detection of MSC devices for security reasons. So, a connected device simply appear in the "My Computer" list of disks, that's all.

Or is this feature still hidden "under the hood" in the latest nightlies?
Maybe

Thanks