Hi, I've "just stumbled over The KIM-1 repository" :) I don't have a KIM-1 myself though I've had an interest in things 6502 having once owned a UK101, C64 etc. I was particularly interested in your sampled KIM programs. I've also been experimenting with the computer programs stored on audio cassette. My webpage has an encoder/decoder for Kansas City Standard formatted tapes. www.alphalink.com.au/~edsa I noticed your WAV files are 16 bit mono, 11025 samples/sec. I've found that using a resolution of 8-bits is more than adequate for this type of task. Using 8 bit would cut your filesize by half! While researching the Kansas City Standard tape format, I read a comment suggesting this was also used by KIM. However some digging indicated this was not so. Since completing the KCS program, I felt the techniques used could be adapted for just about any format including KIM. However I wasn't sure how much demand there might be for a KIM version. If you or other KIM users would be interest in such a program, let me know. regards, Ed