lda $0 : loads the content of the location 0 in A [A = PEEK(0)]
lda #$0 : loads the number 0 in A [A = 0]
(idem for ldy $0)
You must use the second form (#$0). Please, double check these instructions.
P.S.: $0e4a is a typo, right? The correct address should be: $e04a
Let me know.
Please excuse my assembly skills, lda $0 is differnet than lda #$0... I embedded the sounds effects already in my game written in TRSE (Turbo Rascal) and now it works well. My game will be released soon and I would like to mention your tool in the credits if you don'nt mind. The game will be released as "FIZZ", I think also in itch.io.