solutions is much too EBM-mmy for me to listen to as background noise. any of the older FSOL is good: ISDN, lifeforms, and the lifeforms EP. i also listen to a lot of IDM for that purpose: squarepusher, autechre, and aphex twin are favorites, as well as plaid, and more recently, cex and beefcake. crunchy and interesting enough to keep me from toning it out, but not as attention-demanding as stuff with vocals (and associations with dancing).