Linuxsampler & UbuntuStudio

[Miguel Angel]

Hello again. Actually I have installed Linuxsampler from Edgy (thanks to 
Fabien) and Qsampler and dependencies from 7.04 (Feisty)

Qsampler start linuxsampler well:

23:50:54.711 Client connecting...
23:50:54.713 Server is starting...
23:50:54.714 linuxsampler
23:50:54.717 Server was started with PID=6753.
lscp_client_create: cmd: connect: Conexión rechazada
LinuxSampler 0.3.3
Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck
Copyright (C) 2005 Christian Schoenebeck
Detected features: disabled at compile time
Creating Sampler...OK
Registered MIDI input drivers: ALSA
Registered audio output drivers: ALSA
Starting LSCP network server (0.0.0.0:8888)...OK
23:50:57.933 Client connecting...
23:50:57.937 Client receive timeout is set to 1000 msec.
23:50:57.940 Client connected.
23:50:57.945 New session: "Untitled1".
LinuxSampler initialization completed. :-)
LSCPServer: Client connection established on socket:4.
LSCPServer: Client connection established on socket:6.

But when try to configure audio or midi devices, can't find any of them:

23:51:04.517 New Audio device lscp_get_audio_driver_info: 
AudioOutputDeviceAlsa (errno=0)
ALSA lib control.c:785:(snd_ctl_open_conf) symbol _snd_ctl_hw_open is not 
defined inside (null)
AudioOutputDeviceAlsa: Cannot open sound control for card 0 - No such device 
or address
AudioOutputDeviceAlsa: Can't find any card
00:08:50.967 New MIDI device lscp_create_midi_device: Error opening ALSA 
sequencer (errno=0)
00:08:50.970 New MIDI device Could not create device. Sorry.
ALSA lib seq.c:911:(snd_seq_open_conf) symbol _snd_seq_hw_open is not defined 
inside (null)
Error opening ALSA sequencer

it seems an alsa bug but I don't find any solution.
What can I do? Thanks.

P.S.:I don't know how to post into a subject, sorry.