Abstract: A method includes building at least a first data structure by storing artist identifiers and media identifiers as nodes within the at least a first data structure, wherein edges between the nodes correspond to relationships among artists and media identified by the artist identifiers and the media identifiers. User input including a seed identifier is received, wherein the seed identifier corresponds to one of the artist identifiers or one of the media identifiers. A first node corresponding to the seed identifier is located within the at least a first data structure. A first media identifier within the at least a first data structure having particular relationships to the seed identifier is located based on relationships corresponding to the edges between the nodes. A first media associated with the first media identifier is added to a playlist associated with a customized media station.

Abstract: A device includes a processor that is configured to identify a base topic of a personalized media stream and to identify a first media item based on first data. The first data is assigned a first weighting based on an identified level of familiarity associated with the first media item and an identified level of popularity of the first media item in another personalized media stream. The processor is configured to build a collection of candidate media items that includes the first media item and a second media item and to order the collection of candidate media items to form the personalized media stream. Ordering the collection includes ordering the first media item within the collection based on the first weighting. The processor is configured to initiate transmission of the first media item to a client device for playback based on ordering of the first media item within the collection.

Abstract: A device includes a processor that is configured to identify a base topic of a personalized media stream and to identify a first media item based on first data. The first data is assigned a first weighting based on an identified level of familiarity associated with the first media item and an identified level of popularity of the first media item in another personalized media stream. The processor is configured to build a collection of candidate media items that includes the first media item and a second media item and to order the collection of candidate media items to form the personalized media stream. Ordering the collection includes ordering the first media item within the collection based on the first weighting. The processor is configured to initiate transmission of the first media item to a client device for playback based on ordering of the first media item within the collection.

Abstract: A device includes a processor and an interface. The processor is configured to identify a base topic of a personalized media stream. The processor is also configured to identify a first media item based on first data from a first source. The first data is assigned a first weighting of the first source based on an identified level of familiarity associated with the base topic and an identified level of popularity in another personalized media stream. The processor is also configured to build a collection of candidate media items that includes the first media item and a second media item. The processor is further configured to order the collection of candidate media items to form the personalized media stream. Ordering the collection includes ordering the first media item within the collection based on the first weighting. The interface is configured to communicate the personalized media stream to a client device.

Abstract: A device includes a processor, a first interface, and a second interface. The first interface is configured to receive a media stream corresponding to a live radio broadcast. The media stream includes a content item and an identifier of the content item. The processor is configured to provide data to a display in response to receiving a replay selection. The data corresponds to a list of identifiers of a plurality of received content items. The processor is also configured to receive an input indicating a particular identifier of the list of identifiers. The second interface is configured to send a request to a remotely located on-demand content source. The request includes the particular identifier. The second interface is configured to receive a particular content item from the on-demand content source. The particular content item corresponds to the particular identifier. Other aspects are also disclosed.

Abstract: A device includes a processor and an interface. The processor is configured to identify a base topic of a personalized media stream. The processor is also configured to identify a first media item based on first data from a first source. The first data is assigned a first weighting of the first source based on an identified level of familiarity associated with the base topic and an identified level of popularity in another personalized media stream. The processor is also configured to build a collection of candidate media items that includes the first media item and a second media item. The processor is further configured to order the collection of candidate media items to form the personalized media stream. Ordering the collection includes ordering the first media item within the collection based on the first weighting. The interface is configured to communicate the personalized media stream to a client device.

Abstract: A computer-implemented process comprises identifying, by a computer server system, a base topic for a personalized media stream for a user of a computer system; identifying, with the computer server system, a plurality of media items associated with the base topic using a plurality of different and independent categories of media categorization data, wherein each of the categories of media categorization data is assigned a weighting; building a collection of candidate media items from the identified plurality of media items; ordering the collection of candidate media items to form a personalized media stream; and providing the ordered collection of candidate media items for playing to the user.