If somehow not even Super Smash Bros. for Nintendo 3DS is enough to appease your Smash lust, then might I suggest you give Harmony of Heroes a moment of your time? Released on October 4, this is a massive collaboration that celebrates the music of Melee and Brawl across 101 fan arrangements, totalling a massive 7.5 hours of tunes! Insane!
The project was spearheaded Darren Kerwin, owner of the Metroid fan page Shinesparkers and director of two Metroid-themed fan albums entitled Harmony of a Hunter and Harmony of a Hunter: 101% Run. For Harmony of Heroes, he and his team went all out, even getting professional industry talent to contribute. Alvin Wee, the music engineer for Kingdom Hearts HD 2.5 Remix and Lightning Returns: Final Fantasy XIII, hopped on board to master the album. And Grant Kirkhope, composer for Donkey Kong 64, lends a small vocal cameo to the album's rendition of the "DK Rap."
Head on over to the Harmony of Heroes page to cop the album for free in either MP3 or M4A format. If you don't wish to download the entire album, the team has categorized the songs by source franchise for easy access. So if you just want the Star Fox jams, for example, you are all set!