Quick question, I have a Blackstar ID 15 amp, its brilliant, anyway I was wondering can I use the MP3 input to play music though just to listen to, I assume that is what it for, so you can play along with a song and such, but I heard playing music though a guitar amp could damage it, so I'm just making sure it would be ok/not ok to us this to play music though.
I imagine the MP3 input is padded so you can't get yourself in too much trouble. It's probably going to start sounding like crap well before it becomes a danger to the amp. It's not a hi-fi system, it's better than nothing for playing music but only marginally. If you have any other sort of stereo system I'd use that instead.