Finally managed to add music, though like with seemingly everyone else, the remix/original text has disappeared; similarly, visiting the sound test mode shows that the : in the music duration is missing, and shifting to the voices tab shows that the player text (|<< | Random | >>|) is missing too. Though I had the problem where the files weren't actually getting updated, so any music I added/changed kept disappearing, I fixed that by deleting my Sm4shExplorer folder and starting afresh, though I dunno if that's actually what fixed it. Also, I never modified any existing IDs (BLANKs), so adding in new IDs works fine.
One problem I do keep getting with Sm4shExplorer, other than the VGMStream dll failing to load, is that unless I remove the modifications to all but data and data(eu_en), the compiler fails at some point saying that a file is currently in use; the file itself isn't consistent though, as it's been stuff like fighter_ai_common_param.bin and something from the Mario Maker stage.
One problem I do keep getting with Sm4shExplorer, other than the VGMStream dll failing to load, is that unless I remove the modifications to all but data and data(eu_en), the compiler fails at some point saying that a file is currently in use; the file itself isn't consistent though, as it's been stuff like fighter_ai_common_param.bin and something from the Mario Maker stage.