TUTORIAL:
Step 1: Get crispy doom
step 2: make a text document and name it watch.bat
step 3: right click on the bat file you made and click edit.
step 4: copy and paste this into your bat file
crispy-doom -playdemo e1m1uv-fast.lmp
step 5: drag and drop watch.bat into your crispy doom folder
step 6: drag the lmp file into the crispy doom folder
step 7: execute the bat file.