We recently got two Droids for my wife and myself. I was able to transfer mp3 files from my computer to both Droids. However, my wife decided she wanted more mp3s put on her Droid. So, when I put those mp3s on it, the Droid did not recognize these mp3s. I then noticed that when I removed a few mp3s, that those mp3s remained listed in the music player, but would not play of course. I then tested these issues on my Droid and they appear to work fine, no issues.
After reading a few posts and other web sites, I formatted the SD memory card and copy the mp3s back. Same results. I then tried clearing the cache, however, when I go into the Manage Applications, her "Music" app isn't there. Does anyone have a solution to the above issues and how I might get the Music app back on the Manage Applications?