Get timidity sources and compile with these options:
./configure --enable-audio=alsa,arts,jack --with-default-output=alsa --enable-server --enable-alsaseq --enable-gtk --prefix=/usr
Get timidity packages at
http://linuxpackages.net/ , extract it and copy the /usr/share/timidity/ from the package to your system's /usr/share/
Get and install jack and qjacktcl.
Get and install rosegarden.
Here's the script to launch all:
#!/bin/sh
qjackctl&
sleep 3
timidity -iA -B2,8 -Oj&
sleep 3
rosegarden&
#Enjoy

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