QTractor

Hi, I'm newbie with QTractor.

I installed it with: Ubuntu Software Center.

I tried to record a sound but I cant.

Here below are the technical info, thanks for any help.

Clasie

------info

OS

ubuntu 12.04 LTS
1.7 GiB
Pentium(R) Dual-Core CPU E5400 @ 2.70GHz × 2
32-bit
242.2 GB

QTractor:

This program uses Qt version 4.8.1.

Errors

20:14:16.505 Session closed.
Cannot lock down 107335194 byte memory area (Cannot allocate memory)
Cannot use real-time scheduling (RR/5)(1: Operation not permitted)
JackClient::AcquireSelfRealTime error