As you may have noticed, Wine recently integrated the PulseAudio audio backend. This obviously introduces a dependency on libpulse, in 32- and/or 64-bit forms depending on what you're building. Building winepulse will be enabled at configure-time if libpulse is present, otherwise winepulse will not be built. If PulseAudio is not running, or libpulse is not installed, Wine will fall back on another driver. Thanks, Andrew