hi,
  problem 1:
  i am using alsa driver for my ES 1938 sound card. soundcard supports full duplex. I 
got a program for full duplex "pcm.c" from alsa lib 0.5.1 package.but i m using alsa 
0.9.1 package.  When i executed the program  typing  gcc -o pcm.out pcm.c -lasound it 
gave some error which reads like this:
in file included from /usr/include/sound/pcm.h:27
                from pcm.c:4:
          /usr/include/sound/memalloc.h:181:41 missing binary operator before '>='

  is this error related to the alsa package version? or is there any way to execute it?

problem 2:
  do i need to  give "alsamixer" command and make adjustments for mic and playbak? i 
am asking b'coz when i set all these to 100%  i can her  what i speak with out my 
program running. Do i really need to do this prior to running my program? i am in 
confusion .

please help,
thank you,
mahendra

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