Got the sound card working on my TP600E (2645-8AU)
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1.  I had to install the ALSA stuff,
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2.  edit /etc/modues.conf, and add
alias char-major-14 cs4232
options cs4232 io=0x530 irq=5 dma=1 dma2=0
alias char-major-14      soundcore
alias char-major-116     snd
alias snd-card-0         snd-card-cs4236
alias sound-slot-0       snd-card-0
alias sound-service-0-0  snd-mixer-oss
alias sound-service-0-1  snd-seq-oss
alias sound-service-0-3  snd-pcm-oss
alias sound-service-0-8  snd-seq-oss
alias sound-service-0-12 snd-pcm-oss
options snd snd_major=116 snd_cards_limit=1
options snd-card-cs4236 snd_index=0 snd_port=0x530 snd_cport=0x538 snd_irq=5 snd_dma1=1 snd_dma2=0 snd_isapnp=0
post-install snd amixer set Master 100% unmute;amixer set PCM 100% unmute; amixer set Aux,1 100% unmute
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3. mondep -a
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4. reboot.
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