Wow - what a wonderful and cheap piece of software I've found for recording straight from your Technics keyboard into your computer and producing an MP3 file - see: http://www.polderbits.com/
If I could work out how to download you a sample of what it has achieved for me I'd do so...and they let you use the full software for 14 days free as a demo of what it can do...no I don't work for them; I just think it's brilliant.
Roger M

Try, http://audacity.sourceforge.net/

Free. Walter.

Just visit a dutch site I created for my retailer: http://www.keyboard-centrum.nl/

Then select "Assortiment" in the top navigation and subsequently "Accessoires" on the left. Finally click at the bottom of that page on the link. Then you get to the page of extension board and behins each picture is an mp3 that I created ....with Technics Audio Recorder, saving as mp3.

Regards, Fred