Wiimote audio works on all -TR Wiimotes IIRC. So on Windows 7 if you have a Dolphin Bar, Windows 8+ (which has a better MS Bluetooth stack), Linux (of course…), and probably on OS X too.
Edit: if you want to try out Wiimote audio, this PR may help you
(Wiimote audio works even with non-TR Wiimotes)
Edit: if you want to try out Wiimote audio, this PR may help you
(Wiimote audio works even with non-TR Wiimotes)