Looks like the samples and test program didn't track an SDK API change
.../7digital-Android-SDK/sdk/src/androidTest/java/uk.co.sevendigital.android.sdk.test/api.request/preview/TSDIGetTrackPreviewRequest.java
Error:(63, 42) error: incompatible types: ServerAccessToken cannot be converted to String
Error:(77, 25) error: no suitable method found for getTrackPreview(String)
method SDIApi.Streaming.getTrackPreview(String,String) is not applicable
(actual and formal argument lists differ in length)
method SDIApi.Streaming.getTrackPreview(ServerAccessToken,String,String) is not applicable
(actual and formal argument lists differ in length)
.../AndroidStudioProjects/7digital-Android-SDK/sample/src/main/java/uk/co/sevendigital/android/sdk/sample/fragment/detail/TrackDetailFragment.java
Error:(130, 69) error: no suitable method found for getTrackPreview(String)
method SDIApi.Streaming.getTrackPreview(String,String) is not applicable
(actual and formal argument lists differ in length)
method SDIApi.Streaming.getTrackPreview(ServerAccessToken,String,String) is not applicable
(actual and formal argument lists differ in length)