Hi Experts ! How with C program i do List/Check available mixer channels for ALSA snd card X, how to determine is it input or output , how to set [and read] value(s) for any channel(s) , [if necessary] [ different for Left-Right if necessary ] Or simplest case - How to just setta Master and PCM to given values ? Which include(s)--Structures--Functions must be used ? Is somewhere any C copy-paste example or template available ? Tnx for examples in advance @ all. Alfs Kurmis ----