Guitar Hero

[henpike]

      Hello. I have a question about Guitar Hero and was wondering if someone can Please help me and clear things up.   I own a Sony PS3 and have afew Guitar games. I had gone to the Sony playstation store and have purchased and downloaded  the Steely Dan "Music pack"  and have also downloaded Maroon Five a single song.   After the downloads were completed, I clicked on the Steely Dan Music pack which contains about 4 songs. The music pack then installed.  At this point  the steely dan music pack was no longer in my list of downloads.  I do not know where the songs installed into and I can locate the songs nor get them to show up in Guitar Hero .   Total lost and clueless
     In a "step by step"detailed process, can someone please help on what to do or how to get these music packs or single songs to load into guitar hero ?  Thank you !