Drag&drop mp3 player - need tips

i’m currently working on a project, and i have the idea of having a drag&drop mp3 player. basically, when I drag an object (i’m using a vinyl record image) to a certain position on the stage, it will play the mp3 associated with that record. and when I drag the record away from that position, and mp3 will stop.

basically i followed the mp3 player tutorial on http://www.gotoandlearn.com, and i got the whole thing working. now i need help and tips on how to get started on the drag&drop aspect of my project. where should i start? should I write the additional code to my existing actionscript file?