My PC CD-ROM drive does not see my SONiVOX disk.
We format all our Kurzweil CD-ROMs as native Kurzweil disks, which are not strictly ISO9660 (PC) format. This is to ensure compatibility with older models of Kurzweil samplers. Because of this most PCs won't be able to read the disk. If you really want your PC to read your Kurzweil CD-ROM, you can always copy all the files to a hard disk that is ISO9660 formatted by either performing a Backup function in Disk Mode, or manually loading and saving all the files. Then burn the contents of that ISO9660 disk using a CD-ROM burner.

I'm getting a "not enough memory" error when loading my Drum Implants.
Most of the .K25 files on the Drum Series 1 CD-ROM require the PRAM Option in order to load the entire file at once. However, this does not stop users without the PRAM Option to use these sounds! All you need to do is select OPEN instead of LOAD in Disk Mode when getting ready to load. Then manually select the programs you wish to load. If you continue to get "not enough memory" errors, reduce the number of programs you're trying to load at the same time AND/OR get rid of some of the programs, setups, songs, etc. you've got already loaded into your unit. Better yet, get the PRAM Option! With that, you'll be able to load tons of programs!