complicated :/, I never guessied it would be this tricy to do phase separated
stereo, but I should have :). Without phase interpolation, you get static
whenever the phase separation changes due to gaps in the mixed samples.
add alsa support (swiped from newtree:)
+= doesn't seem to work well in automake (or at least not my version). Change
the common_SOURCES += ... to combined_SOURCES = $(common_SOURCES) ... and
change the /following/ instances common_SOURCES to combined_SOURCES.