Most features of Ragtime 5.6.5 are working out of the box.
If the Installer does not work - try to catch its temporal data, which is extracted to a TEMP-folder in C:/Windows/ (?) - copy it to some other place as fast as you can - and then install this extracted archive.
If you have problems to start Ragtime, see the warning below.
Versions of Wine before (1.1.12) do not start the application, see attached bug report. Please upgrade