You use the +import function (right side of the Library tab). This lets you import and name new or add to existing libraries. Locate the Beatcraft Library location for the drums you want and import them. There are some other tips in the Help function in Mixcraft, look under importing libraries. If you set a library name for the imported files instead of mixing them in with current files you can always get to them easily. I like the Beatcraft Rock and Blues loops and will use the jazz ones and mix it up. It all depends on what I'm trying to do. You can import from other sources also as long as the format is WAV, OGG, AIF, etc. (the ones Mixcraft supports). Additional Beatcraft loops are stored in the same place as your current loops. The installer will place them there. Purchase More Drums Vol 1 has some good rock/blues stuff. When I bought the add on packages I bought the Musicians Bundle which I don't think they sell anymore. Hope this helps.