I have the exact same problem. My 2gb 2008 model was working pefectly fine before I decided to plug it into a MacBook so I could charge it today. The MacBook said I didn’t have any songs on it, which is completely wrong, so I then chose to “safely remove hardware”. When I unpluged it, the “connected” screen was frozen. I held the power button up for 20 seconds to reset it and now when I boot it up it just freezes at the “Sandisk Sansa” intro screen. The MacBook only recognizes the clip’s existence when I connect it while holding the center button and when it’s in lock mode, but that doesn’t fix the problem of freezing at all.
Does anyone have a solution to this?