How do you delete songs from an MP3 when connected to a computer?

go to my computer click on your mp3 player icon it could possibly under drive f: open it up click on the song you want to delete go to the left hand side of the screen and there will be a button saying delete from device click it will delete it.

you could also go to the Windows Media Player and click syncronize on the right hand side their should be column with the items of music on it click the song you want to delete and then right click it. it will say delete and then delete it