I have a BOSE sound dock that I believe I got in 2007 or 2008 in may. Now, I had an iPod touch 1st generation that worked and charged on the sound dock. I got rid of it. I now have a 4th generation iPod Nano and when I place it in the sound dock it plays the music but it does not charge the battery. Is there a way I can fix it? I plan to use the new 8 gb iPod touch when I get it in the sound dock but will it charge?