Wait, no no, not that sort of mud...
Yes, GMA released their VIP mud client and despite my misgivings it does seem quite impressive. With the ability to provide speech through Jaws, Window Eyes, System Access or Sapi, play 32 wave files and 1 mp3 simeltaneously, a built in scripting system and various other features it's definitely worth a look.
While it isn't immediately clear whether it is equal to the inaccessible ZMud or the accessible Mushclient in power the scripting system certainly reads a lot easier and is probably a lot easier to pick up, and for all its wonderfulness Mushclient falls down on that respect as well as the playing of multiple sounds at once.
So if you're ready to check it out then hop over to the GMA VIP mud client page where there is a more complete feature list and you can download it for a 30 day demo.
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To live by honour and to honour life, these are our greatest strengths and our best hopes.