AutoTagga is a free utility that lets you add ID3 tags to every .mp3 files in a folder. Choose the directory that contains your .mp3 files, then pick from one of three ways the .mp3 files are formatted. Type in any extra global information, if any, you'd like to apply to the ID3 tags such as year, genre, and comments. Then when you press the Go button, the program collects information from the file names, and adds ID3 tags with the collected information to all .mp3 files in the chosen folder and its subfolders.
PlayOnBeat PlayOnBeat is a very easy to use program for playback of sample loops up to 8 stereo tracks. In can easyly import MP3, AIF, Wav and SWA files.
MP3 Surgeon A Visual MP3 editor which allows users to trim, join, split and normalise MP3s.
Mindloop BPM Calculator This Beat per Minute Calculator has a pretty interface and includes these features: calculates beats per minute, beats per sample, length in seconds, length in samples, sample rate(hz).
Discombobulator BPM calculator This Beat Per Minute Calculator can calculate a sample's beats per minute, beats per sample, rate, sample length in seconds or samples. It has a form that will show you all the equations.