(We'll use the free method: Audacity + Spanner VST). Step 2: Import your 16-bit/44.1kHz WAV file. Step 3: Apply the upmixer. Load Cargo Cult Spanner. Dial "Center Depth" to 70% (for Freddie's voice). Dial "Rear Depth" to 40% (for claps and echo). Step 4: Export Multichannel. In Audacity, set "Channels: 6" and export as AC3 (Dolby Digital) at 640kbps. Step 5: Play. Drop that AC3 onto a USB stick plugged into your 5.1 receiver. Press play.

You will hear the guitar solo sweep from Front Left to Rear Right. That is the "hot" effect. The Hidden Danger: Phase Cancellation Why is everyone suddenly talking about phase ? Because bad "hot" software ruins your bass.

By 2027, expect Adobe and Nvidia to release one-click "Neural Spatial Audio" plugins that convert stereo to 5.1.2 (with height channels) instantly. The tools we call "hot" today will be basic tomorrow. Yes. If you have a 5.1 speaker system and a library of stereo music/movies, you are missing out on 60% of your hardware's potential.