Disclaimer, I did not create this repack tool. There was an Xrd music modding tutorial stashed away in the Steam forums/guides a while ago so here's a video guide.
Written instructions and mod download links:
https://docs.google.com/document/d/124wuebiQ5wwkzj3uLaGa3o_Z_5HaAtWqTgUn8UqpBFQ/edit?usp=sharing
Download for the GGXrdREV_UPK_UNPACK_REPACK tool:
https://mega.nz/file/Ft9kXChZ#tRTF6Kb-JUFcpylwFFYOMvt25XyX0RSe-fY6RwWFYVI
BGM:
Training Theme [CD] - Mario Hoops 3 on 3
0:00 - Extracting
1:08 - Modding
2:43 - Mod Showcase
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Discord .................. https://discord.gg/RhGVPJq
Twitch ..................... https://www.twitch.tv/munchyjr
Patreon .................... https://www.patreon.com/munchyjr
