As requested, here's a MP3 Cutter for you JX! Others can request for your "can't be found" software! I'll help out if I can.

With 'Partial Merge', you can merge any portions of audio files directly by just a simple click without export the portion in advance.

Supports MP3, MPA, WAV, WMA/ASF, OGG, AIFF audio formats in MP3 Joiner Pro and MP3, MPA, WAV audio formats in MP3 Splitter (MP3 Cutter) Pro.

MP3 Splitter & Joiner Pro is the advanced version of MP3 Splitter & Joiner and provides more powerful features besides all features in MP3 Splitter & Joiner. It builds MP3 Splitter (MP3 Cutter) Pro and MP3 Joiner Pro in one, you can split a large audio file into multiple smaller pieces or merge multiple audio files to a larger one.