May 22, 2011 (edited) , 翻译为ZH (显示翻译) , 从EN翻译 (展示原始文件)
What I do is download the bonus video for each girl and extract the music as mp3 from the video ("making of" video, not the interview obviously).
To extract the music I use a bit of freeware called "AVI MPEG WMV RM to MP3 Converter" which can easily be found via a google search.
I find it works really well, and I now have a collection of mp3 files which match the girls performance in each card.