Vinyl from "Deep-Mission-Trance-Records Germany" called "Digital Technology".
It was released in January 2003, this is a Trance/Techno-Cover of the BGM from Gradius Level 1.
Thanks to Gruß Gernot for the Information
I only use two different music players, they both support plugins for playing native coded music files like the PlayStation's .str (movie), .xa (compressed audio, like mp3).
You will also need the vgmstream plugin for playing the .str and .xa files.
Foobar2000 - https://www.foobar2000.org/
XMPlay - https://www.xmplay.com/
I converted the native files into mp3 a long time ago.PSX - Gradius Deluxe Pack - 4.45MB
PS2 - Gradius III And IV - 4.57MB
Both of these were recorded from my arcade boards a very long time ago.
Fun fact that you can get through the whole of the first stage on Thunder Cross without shooting or hitting anything to get the first stage tune with no soundfx in the background.
Here's a selection of unofficial mp3 soundtracks recorded by others.
X68 Nemesis '90 Kai - 29.3MB
X68 Nemesis '90 Kai Other - 27.6MB
X68 Other Nemesis '94 (FAN) - 62.5MB
Standard midi files, sound pretty good.
Midi.rar - 145K
This section is dedicated to Gradius WinAMP 2.x skins, there are now five obsolete skins for a program nobody uses anymore!!!
My first ever skin - 12th July 1998 version.
Gradius Skin.wsz - 20K
My second skin - 9th March 2002
Gradius GameStone.wsz - 289K
This is my third and final WinAmp skin - 12th March 2002
Jikkyo Oshaberi Parodius.wsz - 385K
For those that are interest, here are my PSD source files when I was creating these skin back in 2002..
Winamp skin by Jerryman X
It would seam people can do better, here's a very nice skin from Jerryman X
This skin is dedicated to one of the coolest video game series of all time! It's a shooter by Konami that has most of it's sequels only in Japan(I saw Gradius II there in '89, and have loved it ever since). Some nifty features it has are a chrome oscilloscope that I did myself(feel free to use the viscolor.txt for your own skins, just be sure to gimme some credit) and graphics ripped from the game (options, shield graphics).
GradiusAMP.wsz - 96K
Skin by Matti Kerokoski
Salamander Commodore 64.wsz - 273K
Note:- you will need WinAMP v1.80 or higher to use these skins.