ios - Querying for ipod library podcasts, and sorting them by author/title -

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i´v got these 2 methods fetches contents of ipod library me. still not proficient use of these classes. example podcast title of podcast in library, if want set predicate , query individual podcasts author/podcast title how that.

/* delegate  * set media type */ - (mpmediapropertypredicate *)mediatypetofetchfromipodlibrary: (abstracttvc *) sender; {      mpmediapropertypredicate *abpredicate =      [mpmediapropertypredicate predicatewithvalue:[nsnumber numberwithint:mpmediatypepodcast]      forproperty:mpmediaitempropertymediatype];     return abpredicate; }   /* overriden abstract method subclass  * */ - (mpmediaquery *)setmediaqueryoptions: (mpmediaquery*)abquery                          withpredicate: (mpmediapropertypredicate*) abpredicate {     [abquery addfilterpredicate:abpredicate];     //[abquery setgroupingtype:mpmediagroupingalbum];     [abquery setgroupingtype:mpmediagroupingpodcasttitle];     return abquery; }


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