This may seem like a stupid question for those of you that use a lot of apps, but I just downloaded the Sirius app for my tour and was wondering if there is any downside to playing Sirius radio through your BB for 5 or 6 hours at a time?

Thanks all

It may take up all you application memory and reach 0 and then start deleting things [emails, sms's].
You'll run the battery down for sure unless you have it on charge.