Wrote this for submersed in his thread but thought others might benefit as well. This is definitely not the only way of doing this but its the most transparent as time stretching get get nasty pretty quickly.
This is for cubase 5, all steps will work in any other DAWs im just not sure of how to bring up the crossfade box but that shouldn't be to hard to figure out lol.
first of all here is a before and after DI sample for comparison as well as for follow along purposes.
http://dl.dropbox.com/u/3374294/CHUGZ.zip
anyway lets begin
1..Import example and set session to 120bpm and go ahead and make cuts between each grouping as shown
2.zoom in to where you can see the first chug and a few following chugs as well as the some of the detail in the wave forum
3.slide the first section over untill you have a good compromise between each of the 3 chugs second peaks being perfectly on time. Ive marked the second peak of the 3 shown chugs so you have a better idea what im getting at. Also note that in the example the first chug is just a hair early still but thats fine we are just going for a good balance between the chugs anything more then this can start to sound goofy.
4.do this to all sections and zoom out and you will have this. notice that there are gaps in between the sections that we will fix next
5.select these sections
6.now drag the beginning of the selected wave forums back to slight overlap the ones before it
7.now select everything and double tap x to set the following crossfade. some may argue that in this case this step isnt necessary as there is not anything playing in the track at that point but I feel its good to get used to doing it.
8.one last step! select everything once again and go to audio then bounce selection to consolidate all the edits to one file.
note that this is just a basic run down and that you can get way more in depth for example in longer sections of chugs such as the first in the given example I would make another cut in the middle of the section to get the later chugs as on time as the ones in beginning of the section.
just be careful when you start making cuts where there is an actual note ringing out as the position of the crossfade and amount of overlap needs to be set carefully to not mess with transients, In this case I find that the best bet is to try and place the crossfade in the middle of the 2 chugs as to not mess with the very begging of the next note and the transient of the first. one more thing its always best to make edits in the spaces that the instrument isnt playing!
This is my first tutorial so its probably not written the best but i hope it helps and will do my best to explain anything more if anyone needs it
This is for cubase 5, all steps will work in any other DAWs im just not sure of how to bring up the crossfade box but that shouldn't be to hard to figure out lol.
first of all here is a before and after DI sample for comparison as well as for follow along purposes.
http://dl.dropbox.com/u/3374294/CHUGZ.zip
anyway lets begin
1..Import example and set session to 120bpm and go ahead and make cuts between each grouping as shown

2.zoom in to where you can see the first chug and a few following chugs as well as the some of the detail in the wave forum

3.slide the first section over untill you have a good compromise between each of the 3 chugs second peaks being perfectly on time. Ive marked the second peak of the 3 shown chugs so you have a better idea what im getting at. Also note that in the example the first chug is just a hair early still but thats fine we are just going for a good balance between the chugs anything more then this can start to sound goofy.

4.do this to all sections and zoom out and you will have this. notice that there are gaps in between the sections that we will fix next

5.select these sections

6.now drag the beginning of the selected wave forums back to slight overlap the ones before it

7.now select everything and double tap x to set the following crossfade. some may argue that in this case this step isnt necessary as there is not anything playing in the track at that point but I feel its good to get used to doing it.

8.one last step! select everything once again and go to audio then bounce selection to consolidate all the edits to one file.

note that this is just a basic run down and that you can get way more in depth for example in longer sections of chugs such as the first in the given example I would make another cut in the middle of the section to get the later chugs as on time as the ones in beginning of the section.
just be careful when you start making cuts where there is an actual note ringing out as the position of the crossfade and amount of overlap needs to be set carefully to not mess with transients, In this case I find that the best bet is to try and place the crossfade in the middle of the 2 chugs as to not mess with the very begging of the next note and the transient of the first. one more thing its always best to make edits in the spaces that the instrument isnt playing!
This is my first tutorial so its probably not written the best but i hope it helps and will do my best to explain anything more if anyone needs it