Linking 2 zones using WASAPI output seems to be broken. My zones work independently, but not when linked.
Zone "Player" - WASAPI, event mode checked, 24 bit in 32 bit package, 1/4 sec silence, 6 sec prebuffer. Hardware: SB Recon3d's SPDIF output, using hdaudio.sys (no creative junk installed)
Zone "Meridian" - identical settings. Hardware: Meridian Explorer USB, drivers 1.61.0.0