I've been trying to figure out the same. I don't know if they have Tempo envelops for acid. :| i just cut piece by piece and change it, its annoying as hell

there is in acid 7 for sure. you have to set two tempo markers. like if you're going from 120 to 0 set one at 120 where you want it to start changing, set another one where you want it to end, if you go edit the first marker, change the thing i think its called transition type? change that from hold to smooth or slow or whatever you want to. To set the second marker to 0 i think you're going to have to go in options and change what the lowest tempo you can set is...  I believe default is set to 65. Let me know if that makes sense or i will screen shot for ya

screen shot akhil!

hey all sorry for late reply, here's my feeling on this:

1) as far as I know, you cannot use tempo markers as 40bpm is lowest value (even when you go into options it's only 40 to like 300 i think?). For mixes at like 120 bpm this is actually usually ok to slow it down and just fade out the last beat or two or something (it feels super slow). But not ideal

what's the solution? VST!!!

theres a lot of vst plugins out there to do this. I have "tapestop" for real-time slowing down if i'm recording shit. I have this other thing called "glitch" by illformed. It's a very powerful (but complicated) vst as it can do a lot of stuff like tapedown, synth, shuffle, reverse, delay, stretch just a really really cool vst

i posted zip as i cant post dll to btf

if you want to artificially create that effect in acid, u can simply cut the piece into several pieces, and while in addition to using tempo markers, u can keep pitch shifting each piece down until its so low that it basically seeems like you would turn it off...add a scratch or wind down sound effect on the top of the last piece...and it will artificially create that wind down sound.