Did you turn on the echo button on the track?
Input monitoring
Being able to hear plug-in audio effects applied to a live signal is an exciting feature of SONAR. However, there are two issues that users commonly stumble upon when using the input monitoring feature. The first is that the monitored signal seems to have an echo associated with it. The second is that live input monitoring can lead to nasty feedback problems, particularly if you have an outboard audio mixer, or you record from a different sound card from the one you are playing back with.
SONAR has several buttons to control input monitoring:

Per-track Input Echo button. Each audio track has an Input Echo button

that turns that track’s input monitoring on or off.

Global Input Echo button. The Input Echo On/Off All Tracks button

in the Control Bar’s Mix module turns input monitoring on or off on all audio tracks with one click.

Audio Engine button. To disable all audio activity in SONAR, including input monitoring, click the Audio Engine on/off button

in the Control Bar’s Mix module so it dims.
post edited by cowboydan - 2015/12/23 18:56:22