This is the original audio source for a video I just put up on YouTube. In order to create a video with high-definition dimensions, I had to encode it as an MP4, with AAC audio. For some reason, the YouTube converter ate it up, and made it sound tinny and distorted. This copy, though, is in MP3 format, 320 kb/s dual-channel stereo. Taken from a FLAC source, with all the edits done in WAV format.
I made the cuts with MixMeister Pro 6, and changed the tempo in Audacity. The edits sound pretty seamless. One of the nice things about MM6 is that it can snap to the beat; it also gives you a lot of control over fades.