Thanks for the feedback.
The volume can be adjusted via the volume control keys: Menu Application Key (-) and Mail Application Key (+). The music can be disabled by placing an empty music.txt file within the rc folder ~/.friq/
If you need help, the Zaurus README is available on the download page next to the ipk link. Also look inside /opt/QtPalmtop/share/friq/ and you'll find the READMEs for the Zaurus and the original GP2X game (which explains about the music.txt file). I should have mentioned this sooner.
I've spent the last several days making this GP2X game a stable cross-platform port and have enhanced it somewhat over the original, but other than that I won't be adding anything else to it. I ported it because the gameplay was worth the effort and I still use my SL-5500 Zaurus
I trust it scaled up and worked as intended on VGA models. I'd be interested to know what the fps is at 640x480: open a console and type "friq -fps". The original author capped it at 55 so it won't go any higher than that.
Regards,
Thunor