This is not practical. You're essentially asking how to take an audio recording that's in English and make it understandable to a person who only speaks some other language.
You'd have to reverse engineer the IR pickup and command structure of the receiver, then design in another system of your choosing. A replacement remote must be cheaper by thousands of dollars.
I just checked and saw one of these players, used, with remote, for sale at amazon.com for $22.00. Get a new one. Abandon this model and get a better one. I do agree though -- don't buy a replacement remote because it will probably be $60!
[Full of gluten since 1965!] A good answer requires the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
I agree that buying a replacement remote isn't cost effective, and it probably isn't worth buying even a cheap universal remote to try to find the right setup codes.
But if you have a Comcast remote, or an Atlas that other cable companies supply, or Radio Shack models 15-100/133/134/135/2133/2138/2144, OneForAll models URC-6131/6690/6820/8820/9960/10820, Cox 7820B, or RCA RCRP05B, then try Setup code Video (DVD, VCR, PVR, etc.) 0821.
There is a reasonable chance that 0821 will work.
If you don't have one of those laying around, try any universal remote with Funai, Magnavox, Sylvania, or Emerson setup codes.
I doubt that it is worth spending any money on a universal remote for this, but if you do want to buy one, the RCA RCRP05B is probably still on sale at Walgreen for $8 or $9, and is a good bet to have a working setup code.
Please read the following: Unsolicited commercial advertisements are absolutely not permitted on this forum. Other private buy & sell messages should be posted to our Marketplace. For information on how to advertise your service or product click here. Remote Central reserves the right to remove or modify any post that is deemed inappropriate.