*
* playback_latency() is guarnteed to be <= _signal_latency + _output->latency ()
*/
- assert (!_disk_reader || !run_disk_reader || start_sample >= 0);
+ assert (!_disk_reader || !run_disk_reader || start_sample >= 0 || speed < 0);
/* however the disk-writer may need to pick up output from other tracks
* during pre-roll (in particular if this route has latent effects after the disk).