So, I never really listened to much metal- and I have no idea why. I love so many of the tracks in this game. Was hoping some of the fans could direct me towards some good songs/albums/bands

To give you an idea of what I might like, my favorites in the game's sound track are...

Angel Witch - Angel Witch
Symptom of the Universe - Black Sbbath
Cry of the Banshee - Brocas Helm
Queen of the Masquerade - Crimson Glory
Am I Evil - Diamond Head
Through the Fire and Flames - Dragon Force
Pure Evil - Iced Earth
Battle Hymn/One Shot At Glory - Judas Priest
Betrayal - Lita Ford
Dawn of the Battle - Manowar
Beatiful People - Marilyn Manson
High Speed Dirt - Megadeth
Theives - Ministry
Kickstart My Heart - Motley Crue
Mr. Crowley - Ozzy Osbourne
Road Racin' - Riot
Riding the Storm - Running Wild
Soul Thrashing Black Sorcery - Skeletonwitch
Youth Gone Wild - Skid Row
Master Exploder - Tenacious D


I know, that's a long list, but considering I cut that down from 100 songs - it's tiny. There are a lot of other great songs too.

I'm just tired of wanting to listen to music and having to start up the SP just to listen to the good stuff. I don't really want to listen to anything else atm. So, help me, point me in the right direction.    

Dr. Feelgood by Motley Crue
Slave To The Grind by Skid Row
Painkiller by Judas Priest
 
Those are three good albums to get started with considering your list
 
If you want to jump straight into some black metal then you can try Wolves In The Throne Room which is some of the better black metal I've heard in awhile and has better production than most "better" bands in the genre.
If you wanna try some trash metal then you can't get any more essential than Reign In Blood by Slayer
Death metal I'd try Heartwork by Carcass or Gore Obsessed by Cannibal Corpse.
3 Inches of Blood and Manowar are so metal that it borders on parody. Great music though.
 
Brutal Legend reminded me that I haven't properly listened to metal in ages

A band to introduce you to some metal - An album to introduce you to the band - A song to introduce you to the album.
 
Metallica - Master of Puppets - Master of Puppets
Megadeth -  Rust in Peace - Hangar 18
Ozzy Osbourne - Blizzard of Ozz - Crazy Train
Black Sabbath - Paranoid - Paranoid
Judas Priest - British Steel - Breaking the Law
Steve Vai - Passion and Warfare - For the Love of God
Iron Maiden - The Number of the Beast  - The Number of the Beast
AC/DC - Back in Black - Back in Black
Van Halen - Van Halen - Ain't Talkin' Bout Love
Deep Purple - Machine Head - Highway Star
Cacophony - Speed Metal Symphony - Concerto 
Guns 'N' Roses - Appetite for Destruction - Welcome To The Jungle
Blind Guardian - Imaginations from the Other side - Bright Eyes
Slayer - Reign in Blood  - Raining Blood
Pantera - Cowboys From Hell - Cowboys From Hell 
Dio - Holy Diver - Holy Diver 
At The Gates - Slaughter of the Soul - Slaugther of the Soul
Sonata Arctica - Ecliptica - My Land 
Motorhead - Ace of Spades - Ace of Spades
Death - Leprosy - Pull The Plug
Joe Satriani - Surfing With The Alien - Surfing With The Alien 
Summoning - Oath Bound - Land of the Dead
Mercyful Fate - Melissa - Evil
Alestorm - Captain Morgan's Revenge - Captain Morgan's Revenge
Dream Theater - Images and Words - Under a Glass Moon
Down - NOLA - Temptation's Wings 
In Flames - The Jester Race - Moonshield
Helloween - The Dark Ride - Mirror Mirror
Lamb of God - Ashes of the Wake - Laid to Rest 
Anthrax - Among the Living - Caught in a Mosh
The Jimi Hendrix Experience - Are You Experienced? - Purple Haze (technically, not metal but it approaches it)
Alice Cooper - Billion Dollar Babies - No More Mr. Nice Guy
Yngwie Malmsteen - Rising Force - Black Star
Mastodon - Crack The Skye - Divinations
Opeth -  Ghost Reveries -  Ghost of Perdition
Stratovarius -  Visions - Black Diamond
KISS - Destroyer - Detroit Rock City
Buckethead - Enter The Chicken - Jordan
Dark Tranquillity - The Gallery - The Gallery
 
Youtube those songs. If there's a band you like wikipedia them and take a look at their discography. Certain bands belong to certain genres, if you like Blind Guardian you probably like Power Metal in general, so wikipedia power metal and go through power metal bands; same for thrash metal, death metal (etc), just whatever you like.
 
 

I don't think I can give you more information than what has already been given to you. I will however suggest that if you like The Beatiful People from Marilyn Manson, go get a hold of the album it is on, Antichrist Superstar. I'd also recommend Mechanical Animals and Holy Wood. They kind of went downhill after that, but there are some more recent goodies as well. And since you said you liked the Ministry songs, I suggest you give Nine Inch Nails and Rammstein a listen. Both are huge artists so songs shouldn't be hard to find.

go for a couple of best ofs
 
Skid Row - Best of
Ozzy Osbourne - Essential and also get Ozzy Osbourne - Tribute (best live album)
Iron Maiden - Edward the Great
Metallica - Master of Puppets (not a best of but dude, what an album)
Megadeth - Best Of
Queensryche - Greatest Hits
 
I don't think I got all the album names correct but best ofs are a good way to get you into the music. Then go back and get individual albums to find those hidden gems best ofs didnt include

Early In Flames is pretty nice, and SOME of the newer stuff is good, too. Anything Megadeth is worth having in your library. ANYTHING. Adding to the Lamb Of God suggestion, check out their newest album as well, Wrath. Slayer is absolutely facemeltingly awesome, IMO. Saw them live the summer before my freshmen year, and it was one of the best experiences of my life. Check out Reign In Blood, and Christ Illusion. BLIND GUARDIAN. HOLY CRAP WHAT AN AWESOME BAND. My only dissapointment with this game was the lack of BG. This is what Power Metal is all about. As for albums, I suggest A Twist In The Myth and Imaginations From The Other Side. Fear Factory is pretty good, I suggest the album Archetype.

Get the the Ministry album, Psalm 69: the way to succeed and the way to suck eggs.

Gojira - From Mars to Sirius