So I have a Focus 2008 SE with Sync. I have a pretty old iPod hooked up to the USB, and use it to play Mp3s, Sometimes, especially with longer tracks, the music will 'rewind' to an earlier time upon turning off the car and then coming back later and turning it on -- for instance, today I turned it off at about the 13 minute mark, came back about five minutes later and started the car, it was at about 5:15 or so.
Any ideas? Some weird setting that might fix it?