# User-defined Tools
**URL:** https://community.mp3tag.de/t/user-defined-tools/966
**Category:** FAQ (Frequently Asked Questions)
**Created:** [April 16, 2004, 6:56am UTC](https://community.mp3tag.de/t/user-defined-tools/966 "2004-04-16T06:56:38Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [April 16, 2004, 6:56am UTC](https://community.mp3tag.de/t/user-defined-tools/966/1 "2004-04-16T06:56:38Z")
[General information](https://community.mp3tag.de/t/tools/966/2) on user-defined Tools in Mp3tag
### Examples
- [Open files in Windows Explorer](https://community.mp3tag.de/t/tools/966/3)
- [Play/Enqueue files in Winamp](https://community.mp3tag.de/t/tools/966/4)
- [Web Browser](https://community.mp3tag.de/t/tools/966/5)
- [Folder Navigation](https://community.mp3tag.de/t/tools/966/6)
- [Re-encode WAV using `ffmpeg`](https://community.mp3tag.de/t/tools/966/7)
---
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [April 16, 2004, 6:59am UTC](https://community.mp3tag.de/t/user-defined-tools/966/2 "2004-04-16T06:59:03Z")
### General Information on user-defined Tools
User-defined Tools are external applications that can be added via Options \> Tools to work directly from Mp3tag's main window via the context-menu of the file view (find more about this feature in the corresponding [help topic](https://docs.mp3tag.de/customization/options/tools).
You can also use the keyboard shortcuts Ctrl+1, Ctrl+2 to Ctrl+0 to trigger the first, second to tenth user-defined Tool on the selected files.
Parameters like `%_path%` should be in quotation marks, so paths and filenames with spaces are passed properly. An example of this would be `Parameter1 Parameter2 "%_path%"`
---
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [April 16, 2004, 7:14am UTC](https://community.mp3tag.de/t/user-defined-tools/966/3 "2004-04-16T07:14:13Z")
### Example — Open files in Windows Explorer
> **Note** : As of Mp3tag v3.12, use _File → Open in Explorer_ or the context menu to open files in Windows File Explorer.
>
> The following is preserved as an example for other file explorers like Total Commander.
**Name**
e.g., Windows-Explorer
**Path**
You need to enter the path to `Explorer.exe` here, usually located at `C:\Windows\Explorer.exe`.
**Parameter**
The parameters of Windows Explorer are always seperated by comma and space,
e.g., **`/e, /select, "%_path%"`**
**`/e`** opens Windows Explorer in two columns. On the left is the directory tree, on the right the file view. Without this parameter, only the file view will be displayed.
**`/select`** marks the selected file. If there are several files selected in Mp3tag, only one of them will be marked.
---
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [April 16, 2004, 7:25am UTC](https://community.mp3tag.de/t/user-defined-tools/966/4 "2004-04-16T07:25:03Z")
### Example — Play/Enqueue files in Winamp or foobar2000
The selected filenames should be enqueued in Winamp.
**Name**
e.g. Enqueue in Winamp
**Path**
You have to locate the path of the `Winamp.exe` file. E.g. `C:\Program Files\Winamp\Winamp.exe`
**Parameters for Winamp:**
`/ADD "%_path%"`
**Parameters for foobar2000:**
`/add "%_filename_ext%"`
And tick for all selected files.
---
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [July 6, 2004, 7:14am UTC](https://community.mp3tag.de/t/user-defined-tools/966/5 "2004-07-06T07:14:23Z")
### Example — Web Search
Search web sites for informations about your artists or albums.
**Name**
Name of the website, e.g., All Music or Google
**Path**
You need to locate the path of the web-browser executable, e.g., `"C:\Program Files\Mozilla Firefox\firefox.exe"`.
Now some examples:
**Parameter for Artist search on [Allmusic.com](http://Allmusic.com):**
`http://www.allmusic.com/search/artist/$replace(%artist%, ,+)`
**Parameter for [Google.com](http://Google.com):**
`http://www.google.com/search?q="$replace(%artist%, ,+,&,+)"`
**Parameter for Google Images:**
```auto
https://www.google.com/images?q="$replace(%artist% %album%, ,+,&,'%26',?,'%3F')"
```
You can of course add many more websites and if you find something interesting, please post them.
---
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [July 17, 2007, 6:55am UTC](https://community.mp3tag.de/t/user-defined-tools/966/6 "2007-07-17T06:55:22Z")
### Example — Folder Navigation
Here is a trick to improve the navigation a little. This will give you the possibility to double click on a file in Mp3tag and open it's folder in Mp3tag.
**Name**
Browse folder
**Path**
Please locate the path of your `Mp3tag.exe`
**Parameter**
`/fp:"%_folderpath%"`
Finally you must select Browse folder as default program on double click.
---
### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [February 6, 2022, 7:55am UTC](https://community.mp3tag.de/t/user-defined-tools/966/7 "2022-02-06T07:55:14Z")
### Example — Re-encode WAV using `ffmpeg`
Some WAV files [have an invalid structure](https://community.mp3tag.de/t/how-to-check-files-for-errors/44633) or extra junk bytes at some RIFF chunks so re-encoding the file might fix the problems.
You can use the excellent [ffmpeg](http://ffmpeg.org/download.html#build-windows) command line utility as a user-defined tool from within Mp3tag.
**Name**
wav2wav
**Path**
Please locate the path of your `ffmpeg.exe`
**Parameter**
`-i "%_filename_ext%" "%_folderpath%\%_filename%_out.wav"`