I think you probably mean D1X...
you could always use requiem to decrypt the songs for free
not sure if its still an issue with the newest chipsets but the older ones had a small black hole between like 396 and 404 that they won't clock...
If it was me I would use a pc style plug like this or this one with a built in switch to bring mains power into the case. From there I would go to...
Are you against using voltage regulators? You could use a low drop out regulator as described here along with a potentiometer with a built in...
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