I know I’m being very repetitious on this subject. But SDLTRS is supposed to read WAV files. Which TRS80GP cannot. So I was trying to reduce a conversion step in the hope that one less step might help my odds of reading a tape file. So, I tried to read the WAV file created by Audacity, but I get “sdltrs ERROR: unusable wav file: must be 1 bytes/sample”. However SDLTRS is able to read a CAS file creaed from a WAV file using trs80-tool.