I looked at the B4XLib and could not find any exposed parameter for this. However you could try
modifying SimpleMediaManager.bas. Around line 250 add a timeout line. Use the modified module instead.
B4X:
Dim job As HttpJob
job.Initialize("", Me)
job.Download(Media.Meta.FirstUrl)
job.GetRequest.Timeout = 60000 'some number between 3000 and 10000?
It is too complicated for me too test.