I must admit I totally missed the Joost for Mac alpha annoucement on the Joost website (you need to be logged in to see it). Perhaps all the excitement of building my new PC meant that I didn’t check the Joost site enough 
Once I’ve got my Media Center PC back up an running I’ll be installing Joost again.
The annoucement on the site read:
Many of you have been asking about the Mac version of Joost. I’m glad to say that we are just ready to deliver the first Mac Intel alpha release to a limited number of testers. Be among the first 200 people to click this link. As we have done with the Windows version, we want to exercise the software on a variety of machines and configurations before we release it publically. Note that you need to be a registered beta-tester to use the Mac client. If you aren’t, make sure you apply here first.
Anyway GigaOM didn’t miss it and as a result the 200 downloads has been hit and no more are available… yet.
Amazingly even if you do a search for Joost-0.8.dmg on Google you don’t find anything. Seems that Mac users are courteous enough not to pump Joost’s handywork around the Web.
Having delved into the Joost forums though it appears that the version of Joost for Mac is only for those with Intel processors. As one disgruntled Mac user said:
Considering there are still many Mac users with PowerPC machines, why is joost not a universal binary? Will joost ever be available for the PowerPC platform?
To which a response was:
Let’s say the PowerPC architechture is not gaining in popularity. Let’s also keep in mind that Joost is still beta and the first Mac-tel versions came out last week.
Isn’t the PS3 based on a PowerPC architecture? Well then again it’s more a Linux version that would run it. I wish you best of luck.
Note that this wasn’t from a Joost employee. Will PowerPC users see a version of Joost? Unlikely by the looks of things. Which doesn’t help me because I’ve only got two Powerbooks.
Joost for Windows received a set of bug fixes recently and now sits at version 0.7.4.1.