serdefthe TNDLPT tools (https://github.com/pdewacht/tndlpt/releases) include a test program TLPTTEST.
this is acually a vgz player. It plays a demo file tlpttest.vgz by default :
see demo below :
TLPTTEST utility
A project log for TNDLPT: Tandy sound on parallel port
Parallel port "Tandy" sound card, and related DOS drivers
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