I checked the Lips mix that I made and the song is uncensored as far as I can tell. I heard the word "f*cked" in it at least.
As pointed by Ash, the whole deal of this mod is to use the highest quality sources available to remake the radio stations. I used the remasters that R* released a few years back and those are the best versions available.
Also, since I'm making this post, I'm working on fixing the SA radio stations (the loudness problem caused by the limiter on the master channel) and I will post the updated versions in the following days.
That promo isn't better quality, it's still bandwidth locked to 15Khz when you check it out spectrum wise, with the rest of the band being dead noise. Though it's at least not as harsh sounding due to it being LPCM and not ADPCM.
Yeah, it kinda is though. ADPCM is limited to 4-bit or something similar if I recall correctly. The dynamics thing is due to the eq-ing that R* chose to do for the radio stations. It's quite pronounced compared to how they mixed the radio stations in the newer games. GTA 3 stations actually sound as if heard from a radio. It's also worth noting that some of the Game FM tracks are not available anywhere so it made sense to me to just reuse that higher quality mix. It might be worth going back and replacing the songs that I do have but now I'm busy with SA.