MP3 Boss - MP3 Database & Manager 

MP3 Boss allows you to easily/fully manage & play your MP3 song files. Integrated Winamp support, auto scanning, extensive database functions (sort, search, filter, report), file management, file cleanup and many special functions.
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Active Keyboard 

Launch applications, documents, and URLs, and over 80 other actions to hot keys - Control your Winamp player - Hide application windows - Open, Play and close your CD-ROM - Change the volume, mute - Empty recycle bin - Lock/Unlock Desktop
hotkey manager keyboard macro utility hot key manager control cd-rom window shortcut manager

FineRip 

Organizer for huge MP3 collections. Play your favourite music without any effort! FAST queries, dynamic playlists, individual grading, 'Party'-mode, powerful search function. Add-on for your Winamp 2.x player.
mp3 organizer database playlist dynamic fast query id3

LDB QuickExecute 

Pop-up panel for quick launch of frequently used programs, documents, etc., also for Winamp and some Windows functions control. The main window of the program (panel) is allocated at the top of the screen and occurs automatically.
ldb quickexecute pop-up quick launch

iZotope Vinyl for Winamp 2 

iZotope Vinyl for Winamp is a free DSP plug-in that uses advanced filtering, modeling and resampling to create authentic 'vinyl' simulation, as if the audio was a record being played on a record player.
izotope vinyl plug-in dsp audio music record player analog sound

RndSkin 

RndSkin is a small, customizable WinAmp front end with tray control icons, track change notifications, skin randimizer and task automations such as auto play and auto minimize on startup.
rndskin tray shortcut notification randomizer