For hearing what the notes are, get "Transcribe!", a program that slows down music. It is worth it. I use it every day, pretty well (you can loop sections etc etc with it). There are others, but it's the best I've tried.
If you can't hear what the notes are, even with it slowed down, then try a simpler piece of music. Simpler means either just slower (IE the original solo doesn't have so much fast stuff sluring/bluring into itself) or music with less going on at the same time. Solos with one note at a time and not much other music around are obviously easier to hear.
Also, you will start off having to do it one note at a time, but you won't always be able to listen to just that one note. What I mean is in say a three note run, it's really hard to start and stop the playback over just the middle note, and even if you can, your ear doens't have time to "tune in" before it's all over.
So select a short phrase to play back, but deliberately listen to just one of the notes. As it goes past, sing it out loud. "la la". Then find it on your guitar. Then move on to the next. Sounds laborious, but it's the training you are looking for, and it quickly gets easier.
If you are having trouble playing it, when you know what it is, the first most most most important thing is play it slower. NEVER EVER practice it fast and wrongly, because you just learn the mistake. Instead, play the phrase at the speed you can... even one note per second or slower, till your fingers start to know where the notes are.
Also, if you are having trouble with technique, then practice excercises for technique...
HTH
GaJ