sound - FluidSynth fails in script but works in ipython - Ask Ubuntu

i starting test use of fluidsyinth create midi files. first script simple. works in ipython not script in command line, not anything, no errors , no sound. using python2.7 in both (ipython , comand line). using ubuntu. code:

#!/usr/bin/env python2.7 mingus.midi import fluidsynth c import time  in range (0,100,1):     c.play_note(i,0,100)     time.sleep(0.1) 

i decided test fluidsynth directly comand line in ubuntu-terminal using

fluidsynth /usr/share/sounds/sf2/fluidr3_gm.sf2 mymusicfile.mid 

and got this:

fluidsynth version 1.1.6 copyright (c) 2000-2012 peter hanappe , others. distributed under lgpl license. soundfont(r) registered trademark of e-mu systems, inc.  cannot connect server socket err = connection refused cannot connect server request channel jackdmp 1.9.10 copyright 2001-2005 paul davis , others. copyright 2004-2013 grame. jackdmp comes absolutely no warranty free software, , welcome redistribute under conditions; see file copying details no message buffer overruns no message buffer overruns no message buffer overruns jack server starting in realtime mode priority 10 audio_reservation_init acquire audio card audio0 creating alsa driver ... hw:0|hw:0|1024|2|44100|0|0|nomon|swmeter|-|32bit configuring 44100hz, period = 1024 frames (23.2 ms), buffer = 2 periods alsa: final selected sample format capture: 32bit integer little-endian alsa: use 2 periods capture alsa: final selected sample format playback: 32bit integer little-endian alsa: use 2 periods playback type 'help' topics.  >  

but midi file not reproduced, shouldn't it?

this command works fine in ubuntu-terminal:

fluidsynth -a alsa -m alsa_seq -l -i /usr/share/sounds/sf2/fluidr3_gm.sf2 mymusicfile.midi 

but problem remains in python. script copied @ beginning of thread works fine in ipython if run as:

run script.py 

however not run when execute ubuntu-terminal on command line as:

python2.7 script.py 

i tried following script works in ipython:

#!/usr/bin/env python2.7 import time import fluidsynth  fs = fluidsynth.synth() fs.start()  sfid = fs.sfload("example.sf2") fs.program_select(0, sfid, 0, 0)  fs.noteon(0, 60, 30) fs.noteon(0, 67, 30) fs.noteon(0, 76, 30)  time.sleep(1.0)  fs.noteoff(0, 60) fs.noteoff(0, 67) fs.noteoff(0, 76)  time.sleep(1.0)  fs.delete() 

and following output when run ubuntu-terminal:

cannot connect server socket err = no such file or directory cannot connect server request channel jackdmp 1.9.10 copyright 2001-2005 paul davis , others. copyright 2004-2013 grame. jackdmp comes absolutely no warranty free software, , welcome redistribute under conditions; see file copying details no message buffer overruns no message buffer overruns no message buffer overruns jack server starting in realtime mode priority 10 audio_reservation_init acquire audio card audio0 creating alsa driver ... hw:0|hw:0|1024|2|44100|0|0|nomon|swmeter|-|32bit configuring 44100hz, period = 1024 frames (23.2 ms), buffer = 2 periods alsa: final selected sample format capture: 32bit integer little-endian alsa: use 2 periods capture alsa: final selected sample format playback: 32bit integer little-endian alsa: use 2 periods playback jacktemporaryexception : quits... 

although not make sound.