This device has a voice record function, using WAV, which eats up storage fast. One day, I inadvertently recorded beyond the storage limit. Now, when I try to turn it on or plug it into my computer, I get the message “Not enough space for Music DB. Please free 200 MB.” Trouble is, the device won’t show up in the Finder to let me delete anything! I’ve tried every combination of button pushing to try and get it to restart. Is there any hidden way to wipe the memory clean?