Where can I buy/download a Twiggy ( 60's model etc ) single ?

This is probably hopeless but I've been trying to buy one track by 60's model and 'pop singer' Twiggy - I have her song "Here I go again " on my old , defunct MP3 player and can't find it (other than on a �9 CD ) to load onto my new Mp4/MPEG player - and the two machines won't talk to each other ! I'm a 56 year old Brit so please be kind - I've managed to figure out a lot of stuff so even technical suggestions would be helpful , Thanks ( and "Pip Pip !" for our USA answerers ) John N