no need to apologize, your English seems quite good, actually.
I haven´t heard of this new Android problem yet but I´m pretty sure it wasn´t caused by this site but probably by a recent Android update.
If anybody has similar problems or a solution, please let us know!
I just downloaded a mp3 file on my android device (Samsung Galaxy Tab S2, Android 6.0.1) and it worked fine - found the file in my download folder. I guess you could change the download behaviour somewhere in the settings, probably in the browser settings. Did you try another browser already?