import CodeBlock from '@theme/CodeBlock'; A **Source** that monitors Listening Activity uses one of two metrics to determine if a Song is scrobbable based on your listening: * **percent** of track listened to (50% or more) * or amount of time (**duration**) track was listened to (4 minutes or more) These default values are based on [last.fm's scrobble guidance.](https://www.last.fm/api/scrobbling#when-is-a-scrobble-a-scrobble) These values can be customized in the `options` of Source's [file or aio config](/configuration#configuration-types): {`{ "data": { // ... }, "options": { // highlight-start "scrobbleThresholds": { "duration": 40, // scrobbable if listened to for 40 seconds or more "percent": 20 // scrobbable if listened to for 20% or more of the track's length } // highlight-end } }`}