I just bought a Droid Charge (after having an original Droid). I docked the phone to my home computer and transferred many audio files (wav and mp3) into the Charge, all of which displayed and played on my old Droid. When the Charge is still docked to the computer, I can see all the files did transfer to the phone, as they are all in the list. However, when using the Music Player in the phone, there are some folders and music files that do not show up but others that do. There seems to be no rhyme or reason to this. I tried copying files yet again into the phone but nothing changed. Any ideas?