Seems many people just click the download link at first post, instead of opening the release announce (www.diffthink.com • View topic - RockPlayer first public BETA release), I cite it here, you may find the system requirement and another download link:
RockPlayer first public BETA release
by Water.E » Tue Jun 22, 2010 1:46 pm
We are proud to announce the android video player, RockPlayer is ready for public beta, enjoy video on your favorite phone now!
Support Android OS : 1.6 - 2.2
Support Media format : avi mkv rmvb flv mp4 3gp wmv mov asf , divx xvid h264 rv40
CPU Requirement: ARMV6 、ARMV7 .device must support VFP (NOT Support: HTC G1 G2 G3 )
Download link : ?? - RockPlayer | Google ????
Official Forum : www.diffthink.com • Index page
Must uninstall the old version before install if any. And this public beta will expire at July-15-2010.
Please keep above note when you share the news.
2010-Jun-23: The google group exceed the bandwith quota, you may download the file at http://www.freecoder.org/rockplayer/RockPlayer_0.2.8_Beta_v6_vfp.apk