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added javadoc comment to instance variable
make SongSearcher instance variable private
SongLoader -> Use of ApiProfil to generate songid with userid
Rename of WrongFormatMP3Exception to CopyMP3Exception
serialised Song, Rights, SongLibrary
Merge pull request #149 from duboihug/master

[NETWORK]Ajout et modification des fonctions treatment des messages
Merge pull request #151 from jibzou/master

[Music] SongLoader & CopyMP3Exception
Merge pull request #152 from amina196/master

[music] implemented the Serializable interface for Song, SongLibrary, and Rights
[MUSIC] delete wrongFormatMP3Exception