Simple! Recompile from source! WinUAE is merely an emulator. Aeros is a hosted source-compatible operating system based on AROS. (Of course running Aeros on a 3 GHz Intel would be faster yet but cost a ton more.)
I think the original poster was talking about Amigas, not about AROS. Presumably he wants to run Amiga games etc. that aren't available for AROS. AROS on ARM would have even less apps available than AROS on x86 does.
