All BGM in a single rar + new music

Now all BGM can be downloaded in a 24Kb rar file. I too noticed it was tedious to download one by one.

Also added new ones!  I felt that the pack was lacking creepy/dungeon music

Im planing to group musics by album (Dungeons, towns... ) and a general category since some are more like generic and not inspired by an specific enviroment, but that will be in a future update.