Melodyne is good from what I hear but many users have been complaining about the compatability when connecting it to FL Studio.
If you were thinking about buying Melodyne (a similar program which is worth a few hundred dollars) then think again. It is so powerful and the smooth integration into FL Studio means that you can open up many intances of Newtone without affecting CPU load. This plugin is one of the best improvements I have ever seen in FL Studio. So if you are a really bad singer such as myself, you can pitch correct your vocals and still be left with bad vocals except that they are in tune! It is a pitch corection and editor which can be used to manipulate vocals. Newtone is a new plugin in FL Studio 9.7 beta.
