I just downloaded Rukus "African Queen remix" from your site. (http://payplay.fm/rukuslive). I am VERY glad I got it for "karma" rather than paid for it.
It's 142 kbps, not 192kbps as advertised.
For anyone with a good sound system, 192 is the absolute minimum tolerable quality.
Do let the public know: why are you selling MP3s of lower quality than you claim?