Oooooh! I get what you're saying now, it's not that it sounds weird (which is true) but it's because !!!!! used different instruments and samples, so he kind of, sort of failed at improving it and made the final product much worse- follow Kharaxel's advice and download foobar and bassmidi
https://kode54.net/bassmididrv/bassmididrv.exe (for bassmidi) and foobar which is right there in the internet, if you already have foobar great, I didn't explain this very well but download the file below and you'll get the hang of it, If you any problems with this then tell me.
First, install foobar, you have it already? Good, then install foo_midi foobar2000: Components Repository - MIDI decoder (
http://www.foobar2000.org/components/view/foo_midi) It'll give you a prompt if you want to install that plug-in, then install it.
After that, install BASSMIDI, after that's all done, extract the archive below, when you do that, go to foobar > Library > Configure > Input, then go all the way down to MIDI Synthesizer Host and click on the BASSMIDI section next to where it says "Soundfont:" find any SF2 you want and click it, then drag the midis to foobar and play then, mix and match a little- or just use it's designated sound-font, It's an excellent time-sink.
here, it's some SF2+MIDI's
https://mega.co.nz/#!OdNQUK4b!t8ugH5FGcaACtF0wDjcWYZ_OeedP5auGRqhCZks WR3M
have a sample for one song.
I already have some games ripped in that archive.
https://mega.co.nz/#!mNdwhQrT!CE4ynL7NVUQRvVICXGMeKgz_JoUaFLW7thfXpDc BieE
If you don't want to do these incredibly easy things for some reason I can upload my own crappy copy.
I rushed this tutorial so hard, forgive me.
To be honest, I think it would be best if you made a version of the collection that has standard rips for the .gbs files (like it sounds like it comes from the original GBA).
Also, would it be possible to make a version of this cover art (

) that didn't have the "Remastered Version" logo on it? And maybe add Sonic Pinball Party to the mix with a cover art that has that too.