<p>OpenLP v1.2 is a Windows only application, so the only way you can use it on a Mac is if you can get it running under some form of Windows emulation (e.g. wine).</p>
<p>However you'll probably be on your own trying to do this I'm afraid. It does run under Wine on Linux, but I don't know whether anyone has had it running on OSX.</p>
<p>Version 2 however is multi-platform and so the plan is for this to work on Mac. We're always happy for new volunteers to help test it, more details on the wiki.</p>