Thank you Helge Hafting, Janek Warchol, Federico Bruni for helping me to use 
terminal commands in ubuntu.

I downloaded the right file - dir shows it.
Now I copied the error - see below:

<><><><><>
tsang@tsang-HP-Pavilion-dv2000-EZ723UA-ABL:~$ dir
acl          Downloads        Public    Test.pdf      yming.xhb~
BOOKS          Dropbox        rosegarden    Test.ps       your-love.ly
Calibre\ Library  examples.desktop  Templates    untitled.xhb
Desktop          Music            Test.ly    Videos
Documents      Pictures        Test.ly~    yming.xhb
tsang@tsang-HP-Pavilion-dv2000-EZ723UA-ABL:~$ cd Downloads
tsang@tsang-HP-Pavilion-dv2000-EZ723UA-ABL:~/Downloads$ dir
2011_summer_camp_headcount_May24.xlsx  libflashplayer.so
gsview-4.9                   lilypond-2.13.61-1.linux-x86.sh
gsview-4.9.tar.gz               lilypond-2.14.0-1.linux-x86.sh
install_flash_player_10_linux.tar.gz   usr
tsang@tsang-HP-Pavilion-dv2000-EZ723UA-ABL:~/Downloads$ sh 
lilypond-2.14.0-linux-x86.sh
sh: Can't open lilypond-2.14.0-linux-x86.sh
tsang@tsang-HP-Pavilion-dv2000-EZ723UA-ABL:~/Downloads$
<><><><><> end of message

QUESTION:
Do I need to uninstall v2.12.3 lilypond?  How can I do it?
Janek:  arpeggio midi sound is not produced on v2.12.3 either.


________________________________
From: Helge Hafting <helge.haft...@hist.no>
To: lilypond-user@gnu.org; tsan...@rogers.com
Sent: Fri, June 10, 2011 6:01:52 AM
Subject: Re: V2.14.0 - midi volume & midi arpeggio

On 10. juni 2011 04:04, MING TSANG wrote:
> Thank you for your reply.
> I follow your suggestion steps, I got the following error. I am new to
> linux world (approx. one month). I have a hard time copying out terminal
> message.

That should be easy - if you write your email message on the same machine:

1. Start writing the mail message where you want to show us
   the error.
2. Mark the error text using the mouse.
   a. Put mouse cursor over the beginning of the text
   b. Hold down button one
   c. Drag along the text, you should see it getting selected
   d. release the mouse button
   Now, the message is highlighted
3. Put the mouse cursor over the email message, and press the
   third mouse button. This causes the highlighted error text
   to be copied into the email message.
   If your mouse doesn't have a third button, press the other
   two simultaneously instead.

This is how you copy just about any text from one app to another in
linux. The method is different from windows, but much quicker.

If you're writing your mail on another machine, paste the error messages into a 
file instead. Then transfer the file to where you write your mail.

> 
> sh: can't open lilypond-2.14.0-1.linux-x86.sh

Try the "ls" command. Is the file lilypond-2.14.0-1.linux-x86.sh there?
Maybe you mis-spelled it?

If the file isn't there, use the "cd" command to move to the correct directory 
first. Then use "ls" to check.  Web browsers tend to put files in a directory 
named "Downloads".

If the file is there, avoid mis-spelling by using tab completion. Type
something like:

sh lilypond-2.14

then press the TAB key. Linux should now fill out the rest of the filename so 
you don't have to. This saves time and avoids tyiping errors. It works provided 
that there is only one file where the name starts with "lilypond-2.14"

> 
> 
> arpeggio chord midi sound was not produced on 2.12.3 either.

I don't think lilypond's midi output is capable of making arpeggio sound yet. 
So 
you can print scores with arpeggio symbols, but the midi won't do that.

To get arpeggio in midi, write the arpeggio out using ties.
Example:
http://lilypond.org/doc/v2.12/Documentation/user/lilypond/Writing-rhythms#Ties

Scroll down to "Using ties with arpeggios"


Something similiar can be done do get realistic guitar sound. A guitarist 
doesn't normally hit all the strings at the same time, but the lilypond midi 
guitar do...

Helge Hafting
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