Check the windows directory for an exe file named sndplay.

If you "associate" this file with .wav files (instead of wmp) you can
then create shortcuts to the wav files to play them with a single tap
plus you can simply tap wav files to play them.

fwiw, sndplay is a much more efficient way to play wav files.

Finally, you may be able to use either tel: or dtmf: to play dtmf
strings to your phone (varies with the os) ...tel: dials a number,
dtmf: issues dtmf tones during a connected call. i.e.;

tel:1234567

dtmf:7654321

Beverly Howard