One of my co-workers played me one of the songs from this game and I love it. Anyone have an OST by chance? Thanks for anyone who can help.

One song? There's almost hundereds or songs in the Guilty Gear franchise. Just use the search function for newer or rarer stuff. Otherwise, Galbadia Hotel has the rest for direct download.

Some of the download links for Guilty Gear songs do not work.

That's because

1) Galbadia Hotel is going through financial difficulties
2) Direct Download links which go inactive tend to expire

Just gotta search the forums and hope those DD links are still active.