Sony Acid.
Adobe Audition.
The MegaMix was created in 2000.
Immortal Megamix was created in 1978.
Fighters Megamix happened in 1996.
Jessico Megamix was created in 2002.
The Grease Megamix was created in 1978.
U Like This - Megamix - was created in 2003.
Dancing Stage MegaMix happened in 2003.
Fighters Megamix was created on 1996-12-21.
The Big Blue Megamix was created on 2010-01-19.
Holonic-The Self Megamix was created on 1998-02-02.
Dancing Stage MegaMix was created on 2003-05-30.
Get a Genesis emulator and add the Sonic 1 Megamix into your ROM folder