1)   Visual MP3 Splitter & Joiner 5.9
Visual MP3 Splitter & Joiner is a handy software utility that can split and combine audio files. Cut files fast and easy using a waveform without losses in quality. The program can merge several files into one large. Supports batch processing mode.
mp3 splitter, mp3 split, mp3 joiner, mp3 join, mp3 cutter, mp3 cut, mp3 combine, wav splitter, wav split, wav joiner,

 2)   Okoker Mp3 Joiner 1.6
Okoker MP3 Joiner is a powerful and ease-to-use audio editor. It builds audio joiner in one software. And you can join multiple mp3 files into one big file.It support MP3 joining. Join with high precision and no quality is lost!
mp3 joiner, join mp3, combine mp3, mp3 join, mp3 combine,

 3)   Direct MP3 Splitter and Joiner 2.5
Direct MP3 Splitter Joiner is a simple software utility that allows any person with no technical expertise or special training join or split sound files (mp3 or wav) as well as perform basic editing. MP3 files with variable bitrate are supported.
mp3 cutter, mp3 splitter, mp3 cut, mp3 split, wav cut, wav split, split mp3, mp3 spliter, cut mp3, mp3 cuter,