Music to sheet music?

[MidnightGladius]

I'm wondering if there is some sort of program that can convert sounds to sheet music. There is one website that offers this service for MIDI, but it has a lot of errors and miscellaneous bugs.

Also, I'd like to know if there are any freeware sheet music writers.

[GrassDragon]

Melody Assistant all the way:

http://www.myriad-online.com/en/products/melody.htm