If they’re already MP3 then don’t bother. Can’t make it sound better after it’s already been compressed. You’d need to get source material then convert to whatever format.
There’s nothing wrong with MP3 though. Hell most people are listening to streaming like Pandora and Spotify and don’t complain.
Talk to your IT dept. They might have a student version you can get for cheap.
And btw, 3 years is nothing for software like that. All the major features are already in the software. They just have to keep adding crap to it so people will buy the new version. It’s a big cause of software bloat.
And thus the true nature of humanity reveals itself, as it always does. Usually people who experience this go from liberal to conservative. Being liberal requires holding the delusion that people are naturally good.