Changing audio files in .sm text

[rCaliberGX]

On a few files I made, I used .mp3 converted youtube rips for the audio, which worked perfectly fine. Recently, a friend of mine bought the original song on iTunes and sent me official album versions of the songs I was using.

When I went to go switch the audio files to the album versions, I kept the original album version names and put them in the song folder. I knew that the .sm file also contains the song name that it uses to make the audio work, so I changed the entry there to match the album version file name, with the correct extension.

I opened up SM (3.9) to check if it worked, but no audio plays when I select it in the game, and when I try to open it up in edit mode, it says that the song folder is missing an audio file and can't be opened.

Of course I tried on different versions (3.95, SM5, OpenITG lol) but they all had the same result. DDReam opens the .sm just fine, and the new .mp3 works. I knew that because I had to change the offset slightly on all of them.

Anyone know how to fix this (one of the songs was the one where I made an earlier thread about the steps going offsync and this fixed it so help would be naise)?