I’m guessing there is a setting on the hardwax servers. When I visit the media link from my computer, the music plays just fine. Same with using your app on my computer. The audio links work fine.
When I try visiting the media link and using your app on my phone, that’s when it doesn’t work. I’m guessing the hardwax site or server has a setting that checks the user agent of the browser. If the user agent indicates that the browser is a mobile device, then it’s redirecting to the album page instead of playing the media file.
I manually typed in one of the mp3 links into my mobile browser. It redirected to the hardwax website. Then when I changed to desktop view in the mobile browser, the the mp3 started playing. The funny thing though is that the particular link started working in the app and I couldn’t get it redirect to the page again. I’m guessing it’s some sort of caching in my browser. Trying a different link still gave me the redirect to the website until it was cached. I’m not sure there is anything that can be done, unless you can get the hardwax site to make a change for you.
Some of your media links also seem to be bad links. Like the example in your first post, I get redirected to the hardwax site on my computer browser, but I also couldn’t play track 01 on the page either. Feels like a lot of things going on here that are not in your favor.