"ALSA (an acronym for Advanced Linux Sound Architecture) is a Linux kernel module that replaces several different kernel drivers for sound cards with a single device driver which handles the diversity of sound cards internally."
"The Open Sound System is the "old" sound card Linux kernel driver system which was used in the Kernel up to version 2.4.x. Starting with version 2.5 of the kernel, the OSS is replaced by ALSA, the Advanced Linux Sound Architecture. ALSA has a compatibility layer that enables old applications to work under 2.5 and forth."
"GStreamer is a multimedia framework for a range of multimedia applications. GNOME is the primary user of GStreamer technology and encourages its applications to use it for multimedia features."
"GStreamer is a library that allows the construction of graphs of media-handling components, ranging from simple Ogg/Vorbis playback to complex audio (mixing) and video (non-linear editing) processing. "
"This is an overview of recent Linux sound software for musical and artistic purposes."