mp3DirectCut is a portable mp3 audio editor and recorder. It allows a user to directly cut, copy, paste or change the volume with no need to decompress your files for audio editing.
XMPlay is a win32 portable audio player that was originally introduced in 1998 to support the XM audio format. Today, like many audio players (such as Winamp) , it supports your typical CDA, IT, OGG, MO3, MP1, MP2, MP3, MTM, MOD, WMA, WAV, XM, S3M, UMX audio formats.
YamiPod is a FREE stand alone portable ipod manager that allows you to manage the content of your iPod without even having iTunes installed. This allows you to copy your mp3 and ACC files to and from your iPod.