Well, I'm basically doing a project, where I'll be remixing all the music in Pokemon GSC, to sound like it would if Pokemon GSC was remade on the GBA. Feel free to use these mixes however you like just give me credit.
That's awesome, good work. Too bad you're not actually making a GSC remake, that'd be really cool.
Not, that would be something that would make me go "oh no this **** AGAIN" like I always do.
This, considering it's good stuff (not interested on checking it), in exchange, sounds like a cool thing.
keep it up
How can I insert them into my hack of Pokemon Gold...?
Well if you're talking about the original GBC one, lol I've got no idea. But if you're reffering to Zel's hack than there's a whole tutorial on inserting music into GBA Pokemon hacks in the docs section.
Added an Ilex Forest remix. In-game example coming later.