Hello, I've just installed lmms in my laptop but I can't produce any sound with it.

My lmms output is:

lmms
Gtk-Message: (for origin information, set GTK_DEBUG): failed to retrieve property `GtkTreeView:dd-row-color' of type `GdkColor' from rc file value "((GString*) 0xb17380)" of type `GString'
Notice: could not set realtime priority.
Home directory /home/rfrutos not ours.
ALSA lib pulse.c:229pulse_connect) PulseAudio: Unable to connect: Conexión negada

Playback open error: Conexión rehusada
No audio-driver working - falling back to dummy-audio-driver
You can render your songs and listen to the output files...
Couldn't create MIDI-client, neither with ALSA nor with OSS. Will use dummy-MIDI-client.


Thanks for any help