Flash with asoundrc

[Jan Michelsburg]

Hi everybody,

my problem is that I can't get sound from flash if I use this asoundrc with 
upmixing:

pcm.dmix6 {
type dmix
ipc_key 1024
ipc_key_add_uid false
ipc_perm 0660
slave {
pcm "hw:0,1"
rate 48000
channels 6
period_time 0
period_size 1024
buffer_time 0
buffer_size 5120
}
}

# upmixing:
pcm.ch51dup {
type route
slave.pcm dmix6
slave.channels 6
ttable.0.0 0.5
ttable.1.1 0.5
ttable.0.2 1
ttable.1.3 1
ttable.0.4 1
ttable.1.4 1
ttable.0.5 1
ttable.1.5 1
}

pcm.duplex {
type asym
playback.pcm "ch51dup" # upmix first
capture.pcm "hw:0"
}

# change default device:
pcm.!default {
type softvol
slave.pcm "duplex"
control {
name "RMaster"
card 0
}
}

# DSP wird simuliert und benutzt das dmix-Plugin.
pcm.dsp0 {
    type plug
    slave-pcm "duplex"
}

# OSS-Steuerung für dsp0 (falls es benötigt wird...)
ctl.dsp0 {
    type plug
    slave.pcm "snd_card"
}

# OSS-Steuerung für dsp0 (falls es benötigt wird...)
ctl.mixer0 {
    type plug
    slave.pcm "snd_card"
}

Did I do something wrong?

Thanks,

Jan Michelsburg