Apple Core Audio (.caf) files can be created from other audio sources, including standard WAV. The main difficulty is in finding a proper tool that allows wav to caf conversion, some good converter picks are listed below, but you can probably find more.
Convert WAVe PCM Sound, standard Windows sound format to Apple Core Audio Format.
We found 2 software records in the database related to .wav to .caf file format conversion.
Multiplatform software - convert wav to caf on any platform
Audio converter for Windows and Mac
Convert from wav file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned wav to caf. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A professional instrument conversion program