Converted the rpm to a deb with alien and installed with dpkg no problem. Created the ~/.arcemrc and concatenated the four rom files for RISCOS-3.11, but then having an audio problem.
$ arcem Could not open Extension Rom directory 'extnrom': No such file or directory extnrom_size = 0, extnrom_entry_count= 0 SetUpCMOS: Could not open (hexcmos) CMOS settings file, resetting to internal defaults. HDC: Couldn't open image for drive 0 HDC: Couldn't open image for drive 1 HDC: Couldn't open image for drive 2 HDC: Couldn't open image for drive 3 X visual: TrueColor 24bpp found, RGB shift/masks = 16/8, 8/8, 0/8 couldn't open disc image FloppyImage0 on drive 0 inserting floppy image FloppyImage0 into drive 0: couldn't open disc image couldn't open disc image FloppyImage1 on drive 1 inserting floppy image FloppyImage1 into drive 1: couldn't open disc image couldn't open disc image FloppyImage2 on drive 2 inserting floppy image FloppyImage2 into drive 2: couldn't open disc image couldn't open disc image FloppyImage3 on drive 3 inserting floppy image FloppyImage3 into drive 3: couldn't open disc image Could not open audio device /dev/dsp Could not initialise sound output - exiting
apt-get install osspd-alsa got the /dev/dsp device back but then... Could not read sample rate.