Titanium 4g USB dos not play in car


I have a Titanium 4g USB for my car stereo when I plug my Titanium 4g USB in it plays OK but when I tern off my car and restart my car the Titanium 4g USB dos not play so have got to unplug it plug and put it back in and it start at the 1st albun AGEN how can I get it to work like my old USB stick ie start from last playing song and not having to unplugging it all the time.

Thanks for any help