Adding Audiofile, not possible?

[Delphinio]

hi all,
i always get this error if i try to add a new audio file.
fatal |xx:xx:xx: [statsGetAudioIDFromString] statsGetAudioIDFromString: couldn't get ID -1 for sound filename.ogg

audio.cfg
audio "filename.ogg" oneshot 100 1800
audio.wrf
directory "audio/sfx/weapons" (path is correct)
file WAV "filename.ogg"
weaponsounds.txt
weaponname,filename.ogg,smlexpl.ogg, randomnumber

-- Delphinio

Edit: thanks cybersphinx

[cybersphinx]

Without recompiling you can only change sounds, not add them.