I have a couple of vintage little Casio's that I had way back in the early days and I think the best sound I've ever got out of it was when I was on a stage and plugged the headphone directly into a big Yamaha performance mixer that was running a big tri-amped system...it was awesome sounding!....this little guy sounded unreal...it was pretty fun....so hook them up to an amp and speakers maybe put a mic or two on it from the line out or the headphone whichever it has...one of mine has line out and headphone and the other one only has headphone....but if you have a decent mixer, amp, speakers just run them into it, set the levels up and route it to your DAW....I think they sound really great, but only because they have that plinkity plunk sound...they have a funky old school sound to them that's pretty distinctive...

http://picasaweb.google.com/lh/photo/hGmzjZnF3OYxLrZuC5xwug?feat=directlink

http://picasaweb.google.com/lh/photo/K-dEf_QI8RFn1i9MhjulnA?feat=directlink

Awesome, thanks for the advice. The only out it has is a 1/8 inch headphone jack, but I'll try using that to do exactly as you suggested.

These things have a lot of character. I find them pretty inspiring right now.

Ya they definitely have a certain sound...with a little EQ you can make some pretty cool sounds with them...I haven't used the ones I posted pictures of in years as they're kinda sentimental to me and I kinda like my Roland FantomX7 better...LOL
But now that you've got me thinking about em...I should plug them into my ZED16R and start up one of those beats!
You had to be there in the 70-80's!
Be sure to post something so I can hear what you've got going on!
I'll see if I can get some time to do the same!

If your 1/8" headphone output is stereo you might want to try a relatively cheap interface that will have other uses too. (laptop, iPod, boombox) to XLR interface.

[[url=http://[/URL]="http://www.markerte…"]These[/]="http://www.markerte…"]These[/] are handy.

The headphone jack is the place to start. Two potential problems are:

(1) the headphone output is stereo - either use an insert lead (with TRS 1/4" - 1/8" adaptor) taken to two channels on your interface or mixer, or make up a mixing adaptor (2 x 4K7 resistors from the TRS T and R taken to the T of a TS jack) into the line input of a single channel.

(2) Hum due to a ground loop - take the mixing adaptor output from (1) above to a passive (transformer-based) DI box and thence into a mic input.

Thanks for being so informative guys.

I'm going to try everything you've suggested so far.