Squeezelite is a lightweight, headless Squeezebox emulator that acts as a network audio player for Lyrion Music Server (formerly Logitech Media Server). It receives audio streams via the Slimproto protocol, decodes a wide range of codecs (MP3, FLAC, AAC, Ogg Vorbis, WMA, ALAC, DSD, Opus), and outputs to local audio hardware through ALSA, PortAudio, PulseAudio, or stdout. The application is written in C with a modular, multi-threaded architecture: separate threads for network streaming, decoding, resampling, and output, all communicating via circular buffers with mutex protection. It supports high-resolution audio, DSD (DoP and native), resampling with libsoxr, visualizer export to shared memory, IR remote control, and GPIO amplifier control. The codebase is highly portable, with dedicated Makefiles for Linux, macOS, Windows, Solaris, and various ARM architectures, as well as Visual Studio project files. Build-time options (LINKALL, DSD, RESAMPLE, etc.) allow static or dynamic linking of codec libraries. The project is actively maintained with a responsive community and is widely used in embedded audio players and home automation systems.