Asynchronous advertising placement based on metadata

1. A method of managing insertion of media advertisements in media content over a network, comprising:

receiving a request for advertisement updates for insertion in media content subscribed to by a user device;

receiving information identifying at least one media advertisement to insert in the subscribed to media content on the user device, wherein the advertisement is associated with an advertisement campaign including a plurality of advertisements, the information received from a server that performs a process matching media advertisements to media content;

generating metadata in response to the request, the metadata indicating an advertisement placement rule to designate insertion location of the at least one media advertisement in the subscribed to media content, wherein the advertisement placement rule:

designates sequencing of insertion of the at least one media advertisement into one or more subscribed to media content files consistent with the location information,

associates the designated sequence with a specified condition concerning play of one of the subscribed to media content files,

designates frequency with which the at least one media advertisement is to be inserted into the subscribed to content,

designates at least one criterion for expiration of the at least one media advertisement, and

designates advertisement distribution criteria, wherein the distribution criteria include an advertisement appearance ratio associated with the advertisement campaign;

sending in response to the request the at least one media advertisement over the network to the device; and

sending the metadata over the network to the device so that the advertisement updates may be inserted into one of the subscribed to media content files in accordance with the sequence designated by the advertisement placement rule when the media content file is played under the specified condition, and wherein at least one media advertisement is inserted into the one or more subscribed to media content files prior to delivery of the media content files to the user device.

2. The method of claim 1 , wherein the metadata includes metadata in an XML type format.

3. A non-transitory computer-readable storage medium having embodied thereon a program, the program executable by a processor to perform a method for managing insertion of media advertisements in media content over a network, the method comprising:

receiving a request for advertisement updates for insertion in media content subscribed to by a user device;

receiving information identifying at least one media advertisement to insert in the subscribed to media content on the user device, wherein the advertisement is associated with an advertisement campaign including a plurality of advertisements, the information received from a server that performs a process for matching media advertisements to media content;

generating metadata in response to the request, the metadata indicating an advertisement placement rule to designate insertion location of the at least one media advertisement in the subscribed to media content, wherein the advertisement placement rule:

designates sequencing of insertion of the at least one media advertisement into one or more subscribed to media content files consistent with the location information,

associates the designated sequence with a specified condition concerning play of one of the subscribed to media content files,

designates frequency with which the at least one media advertisement is to be inserted into the subscribed to content,

designates at least one criterion for expiration of the at least one media advertisement, and

designates advertisement distribution criteria, wherein the distribution criteria include an advertisement appearance ratio associated with the advertisement campaign;

sending in response to the request the at least one media advertisement over the network to the device; and

sending the metadata over the network to the device so that the advertisement updates may be inserted into one of the subscribed to media content files in accordance with the sequence designated by the advertisement placement rule when the media content file is played under the specified condition, and wherein at least one media advertisement is inserted into the one or more subscribed to media content files prior to delivery of the media content files to the user device.

4. The non-transitory computer-readable storage medium of claim 3 , wherein the metadata includes metadata in an XML type format.

5. A system for managing the insertion of media advertisements in media content over a network, the system comprising:

a content server hosting media content files subscribed to by a user device;

an advertisement server hosting media advertisements for insertion into the subscribed to media content files, wherein each of the media advertisements are associated with an advertisement campaign including a plurality of advertisements; and

an advertisement matching server that:

matches media advertisements from the advertisement server with subscribed to media content files from the content server, the media advertisements matched with the subscribed to media content files in accordance with metadata generated in response to a request for advertisement updates, the metadata indicating an advertisement placement rule that designates an insertion location of the media advertisements in the subscribed to media content files, wherein the advertisement placement rule:

designates sequencing of insertion of at least one of the media advertisements into one or more of the subscribed to media content files consistent with the location information,

associates the designated sequence with a specified condition concerning play of the one or more subscribed to media content files, wherein the advertisement updates may be inserted into one of the subscribed to media content files in accordance with the sequence designated by the advertisement placement rule when the media content file is played under the specified condition, and wherein at least one media advertisement is inserted into the one or more subscribed to media content files prior to delivery of the media content files to the user device,

designates frequency with which the at least one media advertisement is to be inserted into the subscribed to content,

designates at least one criterion for expiration of the at least one media advertisement, and

designates advertisement distribution criteria, wherein the distribution criteria include an advertisement appearance ratio associated with the advertisement campaign.

6. The system of claim 5 , wherein the advertisement matching server generates metadata that corresponds to the advertisement placement rule, the metadata delivered to the user device for insertion of the at least one media advertisement into one or more subscribed to media content files.

7. The system of claim 6 , wherein the subscribed to media content files are already present at the user device prior to insertion of the at least one media advertisement.

8. The system of claim 6 , wherein the subscribed to media content files are received at the user device concurrent with the at least one media advertisement.