Any chance of the linux port working on arm?
Unlikely. The Linux version will be for x86.
There's a DOS version there, so it should work under DOSBOX. No guarantee on speed though; if they are expecting 2005 hardware, it's likely to be snail-like.
There's a Pandora port (so, ARM/Linux), which seems to be based on this GP2X version (again, ARM/Linux), so it would seem that permission has been granted somewhere along the line. I don't know if that's useful information or not, but hopefully it is.
Also, we should perchance keep the number of tm "emulator" topics low on the official site. I'd hate for the foundation to get flak for "supporting" emulation.
They could always just support legal emulation and shun the rest. Look at World of Spectrum for example, they only host games that they have permission to host, they have legal firmwares and are endorsed by Amstrad.
C64 and Amiga emulation is legally possible by licensing the system ROMs, Aminet is the definitive Amiga PD collection, I'm not sure about the C64.
I have an absolutely enormous list of legal emulation resources, on another forum. If there is an interest, I could re-post the entire list here, once emulators and the like start popping up for the Raspberry Pi.