I have my own mod pack, and when i added this mod it crashed on opening, i dont understand anything on the crash report, I'd appreciate if someone can explain the cause
crash-2020-07-06_15.00.29-client.txt

You seem to have downloaded the wrong version. Do not use the dev version. Use the normal ones.

The problem is not the music player mod, so I'll close this issue. If the issue persists please reopen