From in-game, there is no way to the best of my knowledge. If you have the transfer cable for your phone, you can connect your phone to a program called BitPim (
http://bitpim.org/) and transfer over a modified song_bonus.txt file that contains the songs list to your guitar hero directory which should be in the folder BREW somewhere. (you can get the file at
http://tinyurl.com/6zyer2 ) Make a backup of the file before transferring just in case it doesn't work. If you already have the June track pack, Copy the part in the original file that says something like set_set_name|8|June Bonus Setset_id|8add_song|Whatever...add_song|whatever.. .add_song|whatever...and add it to the file afterset_set_name|7|May Bonus Setset_id|7add_song|Foghat|Slow Ride|slowride|1977|0add_song|White Zombie|Black Sunshine|blacksunshine|1992|0add_song|Mountain|Mis sissippi Queen|mississippi|1973|0but before //GHeroSongV1Just follow the format of the rest of the file. It does work on my LG Voyager. I'm not sure about other phones. I hope this helps
