Can anyone recommend a free, basic utility that will allow me to join and trim MP3 files?

There are hundreds of them on the internet, and many of them are old, or won't run on Windows 8.x, or mangle the audio quality, or simply don't work at all.

I mean, all I want to do is grab a minute or so off the end of one MP3 file, stick it on the beginning of a second MP3 file, and then cut off the last three or four minutes of the combined file, all while maintaining original audio quality and not ending up with a header that displays the wrong duration and won't allow seeking.

How hard can it be? Harder than I thought, Ill tell you that.

tanstaafl.