A similar problem I've had is after I've spent ages learning and mastering a song that i loved and being unable to hear it the same way again.....at the start I'd be wondering 'How the hell does he do that?' and once I knew it spoilt my enjoyment of the song.

My solution? Dont listen to or play the song for ages, forget everything, then when I was in the right frame of mind later, get out the CD, dust it off and enjoy the song. Maybe even have a jam along with it if I felt like it.

Certain songs i once thought to be unbeatable now mean nothing to me...its a musicians thing....once you learn, you change, and changing back is a bitch.

Discovering new bands and artists isnt hard for me though. Last week I visited The Shredzone and found many names I had never heard of. I'm making a point of not trying to learn every new song that impresses me now. So James, try that.....search for a new inspiration in whatever styles you're into and make sure you NEVER learn their licks, riffs ETC.....let the influence go through your mind and not through your guitar.... sometimes one way for me to enjoy the guitar as a part of my life is not to play it.