I've some problems running MIDI: i'm unable to hear MIDI generated by TuxGuitar or Guitar PRO for few days...
I've started "timidity" from my Gnome engine typing:

Code:
Cristiano@linux-n7lx:~> timidity -iA -Os
*** PULSEAUDIO: Unable to connect: Connection refused
Can't open pcm device 'default'.
Couldn't open ALSA pcm device (`s')
So i ran alsamixer:
Code:
Cristiano@linux-n7lx:~> alsamixer
*** PULSEAUDIO: Unable to connect: Connection refused

alsamixer: function snd_ctl_open failed for default: Connection refused
And also:
Code:
Cristiano@linux-n7lx:~> pulseaudio
W: core-util.c: setpriority(): Permission denied
E: pid.c: Daemon already running.
E: main.c: pa_pid_file_create() failed.
Cristiano@linux-n7lx:~> u
bash: u: command not found
Cristiano@linux-n7lx:~> su
Password: 
linux-n7lx:/home/Cristiano # pulseaudio
W: main.c: This program is not intended to be run as root (unless --system is specified).
E: pid.c: Daemon already running.
E: main.c: pa_pid_file_create() failed.
linux-n7lx:/home/Cristiano #
But i still can't listen any MIDI suond...
What shall i do? I'm being crazy...