A) If you want to use any directory (network share) in Rythmbox
1) Open rythmbox
2) Click Edit, then Preferences
You will see something similar to this:
3) Click Browse, choose the location that your network share is mounted.
4) Make sure watch my library for new files is checked (as shown).
B) Based on our chat, I believe that you have manged to use a pendrive with .is_audio_player. Edit that file and copy it to the root of your device. You will want to edit it to comply with the format discussed below. If you have a media player that requires a is_audio_player file, this means that it is not automatically recognized by Ubuntu and it is a bug (ie your drive does not appear in the list Readers automatically detected). So that other users like you are not obliged to define such a file and your drive is automatically recognized in future versions of Ubuntu, please report the bug by running the command: ubuntu-bug media-player-info.
is_audio_player format
Here is a practical example of properties that you can add to this file .is_audio_player (each is explained in more detail below).
For a complete list of all available properties, refer to the HAL standard
audio_folders = Music /, Other folder / subfolder
folder_depth = 8
output_formats = audio / mpeg, application / ogg, audio / x-ms-wma
input_formats = audio / mpeg
Parameter "audio_folders"
List all folders that contain music. Other files will be ignored. \ \ The order is important because the music will transfer to the first folder in the list.
In the absence of this parameter, the music is sought throughout the volume and transfers are to the root.
Parameter "folder_depth"
Specifies the number of child folders in which music files can be found:
This parameter is relative to the folder containing music, as specified in <audio_folders>;
All audio files located in another child folder will not be seen;
The value 0 indicates that there is no depth limit subfolders.
Examples:
If the player stores all the music with the tree / <audio_folders> / <Artiste> / <Album>, use the folder_depth parameter = 2;
For a compilation of Beatles containing two discs with the tree / <audio_folders> / Beatles/Compilation/Disque1 with the folder_depth parameter = 2, audio files located in Disk1 will not be seen.
This parameter is also used when importing new songs:
folder_depth = 0 places the files in the root folder specified in the first audio_folders as
<audio_folders> / <artiste> - <album> - <PDISKID> piste> - name> morceau>;
folder_depth = 1: Place the files in a subfolder. This will be placed in the first indicated in the form audio_folders
<audio_folders> / <artiste> - <album> / <PDISKID> piste> - name> morceau>;
folder_depth = 2 and more: places the files in two subfolders. These will be placed in the first audio_folders indicated in the form
<audio_folders> / <artiste> / <album> / <PDISKID> piste> - name> morceau>.
In the absence of parameters, folder_depth = 0 is used by default.
Parameter "output_formats"
Indicates the formats supported by the player in mime type. The first type is indicated that used for the automatic conversion when importing new songs.
Mime types most commonly used:
audio / mpeg (mp3)
application / ogg (ogg)
audio / x-ms-wma (wma).
In the absence of this parameter, the software used for the import will use the format specified in preferences.
Parameter "input_formats"
Indicates formats that can record player with microphone or from a radio.
Mime types most commonly used:
audio / mpeg (mp3)
application / ogg (ogg)
audio / x-ms-wma (wma).
In the absence of this parameter, it is considered that the player can not record audio.
Source (B):http://translate.google.com/translate?hl=en&sl=fr&u=http://doc.ubuntu-fr.org/is_audio_player&prev=/search%3Fq%3D.is_audio_player%26client%3Dubuntu%26hs%3D8v7%26channel%3Dfs