what is 'slot-service-0-3' ?

[Philipp Bliedung <philipp.bliedung@bliedung.de>]

I tried to set up the sound, but didn't get it to work. I always got
this in /var/syslog this:

/var/log/syslog
.....
Apr  1 19:13:36 laptop modprobe: modprobe: Can't locate module
sound-slot-0
Apr  1 19:13:36 laptop modprobe: modprobe: Can't locate module
sound-service-0-3
.....

so I added this to my /etc/modules.conf

/etc/modules.conf
alias sound   snd
alias snd   snd-card-opl3sa2
alias sound-slot-0 opl3sa2
options opl3sa2 dma=1 dma2=0  io=0x538 mpu_io=ox330 mss_io=0x530 irq=7
options opl3 io=0x388

Now I only get this in /var/log/syslog:

Apr  1 19:13:36 laptop modprobe: modprobe: Can't locate module
sound-service-0-3

I don't know what to add to /etc/modules.conf  for this to go away.
I RTFM (/usr/src/linux/Documentation/sound/Introduction and OPL3-SA2,
etc.) and it said something about these kind of errors, but I didn't
understand it.
Can anybody give me a hint on this?

TIA
Philipp