*Blazblue: Cross Tag Battle in L.A. Vocal*

To install, simply copy the files in the "mod" folder into the assets folder within your BBTAG install, and say yes to replacing the files.
If you don't know where this is folder is, and you bought the game off Steam, then simply go to your Steam client, right-click on BBTAG in your shelf, hover over 'Manage,' and then click on browse local files. You'll see it right above your Save folder, or over your BBTAG_IM if you have the improvement mod installed (as you really should !!!)

If you decide to uninstall, then copy the backups from the uninstall folder into your assets folder, and say yes to replacing files.

If you only want certain tracks, then here is a guide:
184c35bec97795cec658cd47ac6771a5 - Rebellion
05396f75d0f31a8341527f30e70e5abb - Lust SIN
9a43fb01b9069a08fe667aa5bdcf2a61 - SUSANOOH
4f33179a43023c9a834c87fd53eea4c2 - Awakening the Chaos
b2d95c081ad18c32a6a454a43f4ac805 - Gluttony Fang
baa95a415cc9a56501b98dd1fa03b486 - Active Angel
ae5daa3e853050622cceafe1b737fee5 - Under Heaven Destruction