A new version of Snes9x Gx (SNES emulator) for Xenon/v1 Xbox 360 consoles using the JTAG Xell Hack has been released.

Release notes:

This version of snes9x fixes the ticking sound problem and also swaps the B & A buttons around.

Build also has wireless pad support so no more wired controllers needed.

Only currently running on the xenon xell hack. Support for other chipsets are in the works!
Thanks to snes9x-gx and tmbinc for releasing his version of the source.

Thanks to http://www.tehskeen.com/forums/showthread.php?threadid=13753 for the news.