WAV-PRG is able to read emulator files (.PRG, .P00, .T64) and convert them to: In order to perform the latter two, some additional files are required: tapdecoder.dll (for both), libaudiofile-0.dll (for the second one only), libportaudio-2.dll (for the third one only). Those files are not distributed with WAV-PRG. They are distributed with Audiotap. Download Audiotap and put the above files in the same directory where the file wavprg.exe is.

How to create Commodore 64 tapes