Actually, if you're going to try something like that (how could you wire it to the Mach 460???), consider a used Toshiba Libretto 70-CT, 100-CT, or 110-CT. (You could overclock a 50-CT as the 75MHz processor probably won't cut it). You can find those on eBay. Librettos are full Pentium PCs handhelds about the size of a VHS videotape. IIRC, the 100-CT and 110-CT can use standard 2.5" laptop hard drives, so you can replace them with how much space you want. Stick with a basic operating system like Win95/98 and up the RAM to the max, set the swap file to 0, and it should avoid the hard drive when playing MP3s. But then again, if the HD fails if you buy a new one, you can claim warranty...