According to CamcorderInfo.com's review...
It's still a challenge at the point. Quoting from
http://www.camcorderinfo.com/content/Sony-HDR-UX1-Camcorder-Review.htm
----
Editing (1.0)
Heres the tricky part. So far, there is one and only one way to view AVCHD footage on anything but the camcorder: Sonys in-the-box editing software (a chorus of groans rises from the audience). Yes, we know that in-the-box software is usually rudimentary at best, and malfunctioning at worst. Included in the bundle is an ACVHD player, a media import program, and the latest version of Picture Motion Browser.
In this case, we found the whole process extremely frustrating. A PC in our office that has never given us any trouble was completely unable to read the disc after installing the software. Our Macs were rendered entirely useless, as the software can only be installed on Windows machines. Finally, another PC in the office was able to pull the footage, but by that point, we were pretty frustrated with the whole process. DVD footage is often a hassle, but nothing prepared us for this little battle.
Heres another problem. Though a number of software manufacturers have signed on for AVCHD, including Adobe, Avid, InterVideo, Nero, and Ulead, not single one of them has a product on the market to read it, nor have they given a date when said software will be released. Even Sony Vegas cant play AVCHD yet (though Vegas 7 is due out soon). Without a workflow solution in place, even a mediocre one, AVCHD is a format trapped in its own media.
This review would have been out a whole week earlier if we hadn't run into these problems, and think about the number of resources we have on hand. What is the poor average consumer to do if they owned an HDR-UX1 right now? We have no doubt that solutions are in the works from any number of sources, but we are writing in the present. The present says: "wait on it."