: AudioRelay for Windows 7 generally requires a 64-bit version of the operating system; it is often noted as unsupported on 32-bit Windows 7.

So dust off that Windows 7 machine, install AudioRelay, and let your vintage PC sing through your smartphone speakers.

When you first launch AudioRelay, Windows Firewall will prompt. . The app needs UDP ports 51111 (control) and 51112 (audio stream). If you block it, your phone won't detect the PC.

If AudioRelay proves too unstable on your specific Windows 7 hardware, consider these alternatives:

No official portable version, but you can install to a USB drive if you manually extract the MSI using 7-Zip—though not recommended due to driver requirements.