Yeah, I was trying to see how many acronyms I could pack into one subject line. Doesn't it look exclusive and important? Translated into English, it means that the record label Ioda is offering a free MP3 download sampler called "SXSW Opening Day Bash," which I assume means these are their bands that they're sending to SXSW this year. From the reviews, it sounds like a pretty eclectic mix ranging from Chinese post-punk to techno, so it might be worth a listen.
(Requires Amazon's MP3 downloader widget, which is free and automatically imports your downloads to iTunes.)