Is there a way of getting my music off my iPhone to put onto a disk or memory card, i have windows vista and i have my iphone set as manually manage music.
The answer is no from an iPhone to a disk or memory card.
iTunes includes an option to transfer content purchased from the iTunes Store from an iPhone (or an iPod) to iTunes. This is for content purchased from the iTunes Store only - not for content acquired elsewhere that was transferred from iTunes to an iPhone.
The manually manage music selection is for manually managing music with iTunes only. This provides for manually dragging content from your iTunes library to the iPhone - in place of using a Playlist for syncing or syncing content that is checked in iTunes.
Why did you delete all your music from the iTunes library?
You need to put if back since music can be transferred from your computer to an iPhone (or iPod) with iTunes only.