emuasylum.com seems to be down frequently.
you can try to download the rom set from here.
This is an archive of Mame 0.37b5 rom set so, there are many rom files that won't be compatible.
Jarcade Lite version is available on market.
It support 3 games you can try out.
IMPORTANT: please use your PC to download and copy them into the phone SD card.
1943 - download
Circus Charlie - download
Moon Patrol - download
Please read "Instruction & Tip" first.
And also check out YouTube video of full version game play at here