start moc after reboot

I have Ubuntu 9.04 on my desktop. If i start moc when my user is login in gnome. All is ok. But if i start moc after reboot without loging in gnome I see in stdout

Running the server...
Trying ALSA...
I: caps.c: Limited capabilities successfully to CAP_SYS_NICE.
I: caps.c: Dropping root privileges.
I: caps.c: Limited capabilities successfully to CAP_SYS_NICE.

mocp started successffuly. But I can't hear the music.
After, i start the mocp by root. The music plays, but i can't edit the volume.

Sorry for my bad English ;)