Full duplex sound

RH51 system. System kernel not changed from install. SB 16 soundcard and driver. Works great for playback. multitrack software. I can't play and record at the same time. SB16 basic box says it supports duplex. If I cat sample.au > /dev/dsp there is no complaint. If I cat sample.au > /dev/dsp1 I get "dev not configured" How do I get duplex support?
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vxConnect With a Mentor Commented:
The Linux kernel includes OSS/Free 3.5.2, that's the Open Sound System. OSS/Free is free, and it isn't as advanced as its commercial version, OSS/Linux.
OSS/Free doesn't support full duplex, but OSS/Linux does. If you really want to use full duplex, you'll have to buy OSS/Linux. Have a look at:
http://www.opensound.com OR

But you could always wait, until the Free version supports full duplex; it could be just a matter of time.
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