I just downloaded your program and used it to stitch together album files from a 4-CD opera set - 62 tracks in all. Many of the tracks - half of them or more - transition from one to the next without any silence between them. I used EAC/LAME to rip them, which supports gapless MP3 encoding. But very few MP3 players, either software PC-based or portables like the iPod, will play these files without audible discontinuities between them. Only Foobar2000 will play them back gaplessly. My car CD player will play MP3 CDs, but doesn't support gapless playback either.
I was hoping that your program could stitch these tracks together into a gapless whole, but alas, it does not. The gaps are less noticeable in the album file, but they are there nonetheless. This is an issue not only with operas but with CDs of any live concerts where the sound is uninterrupted from track to track. Surely I am not the only one who thinks these gaps are a P.I.T.A., am I?
So far, I have found only two workarounds, neither of which is ideal: One, I can manually edit out the silences between tracks in a program like Adobe Audition or Audacity, but that involves a lot of time and re-encoding, which compromises the quality somewhat. Second, I can rip twice - once into gapless tracks for home PC consumption, and again as a single-file disk image for the car - again a time-consuming chore.
If I could encode - ONCE - with EAC/LAME into separate, gapless tracks, and then use a program like yours, to stitch these tracks together for automotive or iPod use - seemlessly without manual editing or re-encoding, I would be MOST happy!