How to record or monitor what’s playing through your speakers via Pulseaudio and pavucontrol.
Quick setup Bluetooth sound (speaker) on Linux PCs and embedded single-board computers, including the Intel Edison.
GNU Radio (and Companion GUI) install/run via Windows Subsystem for Linux for network-connected SDR and simulations.
Detailed review of Soundbot SB240 and SB220 Bluetooth headphones–noting some problems with modern Bluetooth source devices.
How to force Bluetooth headphones to be recognized on Linux. Force Linux Bluetooth A2DP/HSP audio modes via pavucontrol.