Things needed:
Some form of MRS packer/unpacker. I suggest using MRS Unpacker Advance-[Beta]. You can also use the MRS.zip i attached which is set up for unpacking and packing bgm.mrs, so all you need to do is click either pack or unpack.
A OGG converter. I reccomend Download Audio File Format Converter Software which is free and will convert to and from many formats. There are several other free converters out the on the net. If you find a really good one, please post a link (No direct downloads).
Instructions:
1. Collect 10 songs, try to find songs that would fit in where they are played.
Song locations:
Code:
Character Select Song :Intro Retake2(D-R)
Lobby Song :Theme Rock(D)
In Game Songs :El-tracaz
:HardBgm3 Vanessa Retake(D)
:HardBgm(D)
:HardCore(D)
:HardTech(D)
:Industrial technolism
:Ryswick style
End Of Game Song :Fin
2. Convert them to .OGG format using your conversion program.
3. Rename them exactly as above depending on where you want them played, if you havent already done so.
4. Now you can either place them in a new folder called bgm, pack them and overwrite the existing bgm.mrs OR you could unpack the original bgm.mrs and replace the existing songs in the bgm folder. Simple.
BGM Information:
BGM is shortened from Background Music. A bgm must have 10 songs in .ogg format.
Credits to Ventrix from Legacygamers for posting this guide ^_^