Multichannel Audio problems

I've been working with d37 on an Intel Machine ans had some problems.
The first think is that I can only use Wav files, Aif (big endian encoded)exported files are not working, (aif Little endian are working, but I cannot encode little endian anymore with Quicktime!). When opening SAMSC with Roseta I can use all formats but not wav.
Next problem: After Loading a track, if I wait about 15 minutes to send a play command, sometimes it fails to start playing the track, or it starts playing and after 1 sec stops. The work around for this annoying problem has been to use the load command and after 1 sec send the play command. I don't like the 1 sec delay, but it is better than not start playing it. I tried using Roseta and the problem was very similar.

sounds like ram issues wav files are pretty huge just a 1 min file can be up too 500mb if your ram is slow or you dont have much of it, it can confuse your computer