No, you can't get DSD from regular CD's.
Either from SACD or purchase from hi-rez music web stores such as this one: http://audiogate.bluecoastrecords.com/
Also check out http://store.acousticsounds.com/cat/365/DSD
Just saw this, i'll do my best :)
I've killed a few posts. As per : http://www.head-fi.org/t/704698/the-astell-and-kern-ak240-impressions-thread#post_10251073 1st hand experience or practical questions only. No speculation. That's exactly how the other AK240 thread ended up being a mess.
Subscribers, if you see something that's off, please report, don't reply or antagonise the posters.
Send your AK240 and other DAPs over. I'll help keep this thread alive whilst you're outta commission ;-). Rest well buddy.