[LAU] Midi sound Snafu

[J.]

                                                                                                                                            B.H.


Hi,
Could anyone help me to get midi sound on a computer that I'm setting up for a freind woh has to use Linux and is not able to set up now by himself?
Problem (1): Before I upgraded to kubunyu 9.1 (from 9.0.?) I was able to hear midi by playing the virtual keyboard; now it doesn' play.
I have connected a usb midi controler and I see midi activity in Rosegarden but no sound.
What do I do.
Problem (2): My friend told me how to set up a bash file (or whatever it's called) to start Jack and it starts on the command line. But I'm a command line dummy amd I can't type So I would like to know how to set up Jack through ths jack controle graphically. 
And -could it be - that all the startup connection stuff on the graphic controle has to do with the no-sound I get?

Hopefully
                    Jonnie
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