Wow, first of all, thank You for post! This is really nice apk!
As for the megaupload problem - just try downloading again after few minutes.
It's a strange issue if You don't have a premium account on MU.
I believe that this is a legit music player from Motorola because I found a video on youtube from the site Mobileburn.com that shows a new connected music player on the Cliq XT. The player looks exactly like the screenshots on the blog post. Also someone brought up that the file is dated for tomorrow which to me means that maybe Motorola intends on officially releasing this tomorrow.
Here's the video link: On youtube: watch?v=B2tGFoNuQeg
Sorry about the split up url, I'm new and I have to post eight times in order to post web links.