So I went to find that site that had the soundtrack for Bezerk (hehe) and came across a classic arcade game emulator site.
Linky
I am about to try one, looks like they have quite a few games to play:
NEW Joust (Williams 1982): Joust was an arcade game with a really simple but absolutely brilliant game idea. It is settled in a bizarre underworld, where you (a knight riding an ostrich) duel with others. A really weird, unreal environment as it was popular for the arcade games of that era.
With its unique concept and cooperative or competitive play, Joust quickly became an arcade hit. Home versions appeared on nearly every gaming system, and an arcade sequel was released in 1986.
The emulator supports sound via samples. They need some time to load, so be patient.
Defender (Williams 1980): In 1980 Williams came out with their legendary game Defender, which was an enormous success. It was the first side-scrolling shooter and had brilliant graphics and sound. The controls are rather complex using a lot of buttons, but this is an important part of the Defender feeling. The best thing of all the game are the shots! The cool oscillating laser beams and the martial sound effects make Defender a game for REAL men (and women) ;-)
I remember very well my first game of Defender back in 1980 or 1981. I played only about 30 or 40 seconds when my last ship exploded, but the game fascinates me until today (the shots are still unbeated). Excellent work of the Williams people. So I am happy, that I could make a Defender emulator at last (even if there are some graphics bugs).
The emulator supports sound via samples. They need some time to load, so be patient.
Tetris (Atari Games 1988): In 1988 Atari Games made an excellent version of the classic game Tetris for the arcades. They introduced some nice additions to the original game idea and made a huge number of different levels. The machine used a good old 6502 CPU, which is quite unusual for such "new" games, and Ed Logg, the programmer of "Asteroids", was a member of the development team.
The emulator does not perfectly emulate all of the graphics, because the Tetris machine used a dynamic color palette. To compensate for this, a real-time emulation of Atari's famous "Pokey" sound chip was added, so that you can listen to the cool Russian-style tunes, that Tetris plays with its two Pokey chips.
Carnival (Sega 1980): Yes, Sega has a long tradition. With Carnival they made a really entertaining shooting game, which was quite successful in the arcades back in 1980. After clearing the gallery, you have to shoot at the poor polar bear
Berzerk (Stern 1980): Berzerk was Stern's first video game success. They sold almost 40,000 machines of it. The game idea is a classic one. You fight intelligent robots in many different rooms and run away from the famous "Evil Otto". Although the graphics were primitive, it was cool in its time, and some call it the "Doom" of 1980.
It is also said that in 1981 a young Berzerk player died of a heart attack right after playing his favorite game. So be careful, click the link above at your own risk
Tempest (Atari 1980): Together with Asteroids, Tempest is the typical representative of the vector games. The fast reactions you need to be good at it, the revolutionary game design, and the cool effects made it a great success in the arcades. It was ported to many home computer platforms and to consoles, but of course, no raster graphics hardware could reach the special attraction of Atari's vector machine. Tempest has found its place in the eternal hall of fame of video games.
Tempest was a really hard one to emulate. It was back in 1998, that I first tried it. The JAE emulator also supports sound (at the moment only by samples - I must try a Pokey emu in Java some time

.
Lode Runner (Irem 1984): This is a really cool game based on a simple concept with perfect game play. Lode Runner is one of the few classics that was first successful on PCs and home computers, and came to the arcades later. The original game was written in 1982 by Douglas E. Smith for the Apple ][. It was ported to many platforms later (PC, C64, and many others). Irem licensed the game from Broderbund in 1984 for the arcades. They made a cool version for their M62 arcade machines, which is emulated here.
To make it through all the levels (I think there are 99!) is a real challenge - don't give up!
The emulator supports sound.
Mario Bros. (Nintendo 1983): This arcade game from 1983 is the starting point of Nintendo's famous "Super Mario" series on the NES and on the gameboy. The emulator supports sound.
Donkey Kong 3 (Nintendo 1983): Nintendo's third part of the Donkey Kong trilogy is from 1983. Although, it could not continue the success story of Donkey Kong and Donkey Kong Jr. in the arcades, it was very popular on game consoles later.
Phoenix (Amstar 1980): The first arcade machine I ever played on

Phoenix had great graphics and sound for it's time. The five different levels and the characteristic enemies make it great fun to play.
The emulator also supports the sound effects.
Pleiads (Tehkan 1981): Pleiads is based on the same hardware as Phoenix. I think even the software was taken from Phoenix and modified, to result in a game, that is similar in it's gameplay, but also has some unique features.
Traverse USA (Irem 1983): Ride from coast to coast with this classic arcade game from Irem. "Traverse USA" was licensed by Williams and distributed under the name "Motorace USA".
All the sound effects are emulated. Be patient, as the loading of the roms might a little time.
The game runs in an unlimited-fuel mode, so you will certainly reach New York
Pooyan (Konami/Stern 1982): A nice game from the past - save the little pigs! I liked to play the C64 version of Pooyan a long time ago
Kung-Fu Master (Irem 1984): This is in my opinion one of the best video games of that time. Kung-Fu Master is the father of fighting games. It was the first of a whole genre of side-scrolling beat'em up games - a concept that is popular until today.
Super Bagman (Valadon Automation 1984): The sequel to Bagman. The gameplay is as cool as its predecessor's.
Donkey Kong Junior (Nintendo 1982): The follow-up to Donkey Kong was the second game in Nintendo's Mario series. The emulator also supports sound (although the background tunes are missing).
Bagman (Valadon Automation 1982): Bagman is one of the few European arcade classics. It was made by a French company and licensed to Stern. Nice gameplay!
Omega Race (Midway 1981): This was Midway's only vector game. It was cloned many times. E.g., there was a cartridge (!) for the Commodore 64. The game uses the same video hardware as Atari's Asteroids but is based on a Z80 CPU.
Nibbler (Rock-Ola 1982): A famous arcade classic with an original game idea, which has been copied many times.
Vantris (Norbert Kehrer 1998): Vantris is a Tetris clone which I programmed in 1998 in 6502 assembler for the hardware of the arcade game "Vanguard" (Rock-Ola hardware). This is an emulator for a Vanguard machine with the Vantris ROMs. You can also download the Vantris ROMs here and play Vantris with the MAME emulator or use the ROMs for your Vanguard machine ;-)
Space Invaders (Taito/Midway 1978): The game that started all the video game hype. Made by Taito for Japan and licensed by Midway for the US market. Sound is also emulated.
Pengo (Sega 1982): Look what cool stuff Sega made in the early eighties.
Amidar (Stern/Konami 1982): Classic game on hardware similar to Scramble.
Ms. Pacman (Midway 1980/1981): Midway's sequel to the legendary Pacman.
Scramble (Konami 1981): The first side-scrolling shooter I remember (except the extremely cool Defender, of course). The game was licensed by Stern for the US market. This emulator is a pre-release. The blinking stars and the varying background colors are not yet emulated.
Galaxians (Namco 1979): The ancestor of Galaga and many other similar shooters.
Frogger (Sega 1981): This is again one of the real classic games of the early eighties. It has no sound yet, but I am working on this.
Donkey Kong (Nintendo 1981):
Pacman (Namco 1980):
Night Driver (Atari 1976): Atari car driving game from 1976.
Dominos (Atari 1978): Atari game from 1978.
Lunar Lander (Atari 1979): I think the first Atari vector game from 1979.
Asteroids (Atari 1979): Very famous Atari game from 1979. I played some games on this arcade machine back in the early eighties (sigh). It is a vector game using the DVG chip (Digital Vector Generator).
Asteroids Deluxe (Atari 1980): Successor of the legendary Asteroids.
Centipede (Atari 1980): Very famous Atari game from 1980. May not work correctly because of missing functionality in Microsoft's Internet Explorer.
Gravitar (Atari 1982): Atari vector game from 1982. It is a vector game using the AVG chip (Analog Vector Generator), which is capable of producing color vectors.
Astro Fighter (DECO): I played on this arcade machine by myself back in the early eighties.
Space Duel (Atari): An Atari vector game from the early eighties.
Black Widow (Atari): An Atari vector game from 1982.