How do I replicate changes I made on my device back to my desktop?

[mealoide]

Hi all,

This is how I use winamp on my android device.
I have many mp3 files on my desktop (local library). I copied them all to my device over wifi using the sync option.
I then travel with my device, and as I listen to the tracks, I delete the ones I do not want to keep.
Once I am back home to my desktop I'd like the files I deleted on my device, to be ALSO deleted from my desktop.
I guess what the computer would do is compare the local library to the device, and remove any file that is not on the device.
I haven't found a way to do this... is it possible?

Thanks